spring-mvc.xml檔案

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <mvc:default-servlet-handler/>

    <!-- Controller包(自動注入) -->
    <context:component-scan base-package="com.http.controller"/>

    <!-- FastJson注入 -->
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <!-- 避免IE執行AJAX時,返回JSON出現下載檔案 -->
            <!-- FastJson -->
            <bean id="fastJsonHttpMessageConverter"
                  class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <!-- 這裡順序不能反，一定先寫text/html,不然ie下出現下載提示 -->
                        <value>text/html;charset=UTF-8</value>
                        <value>application/json;charset=UTF-8</value>
                    </list>
                </property>
                <property name="features">
                    <array value-type="com.alibaba.fastjson.serializer.SerializerFeature">
                        <!-- 避免迴圈引用 -->
                        <value>DisableCircularReferenceDetect</value>
                        <!-- 是否輸出值為null的欄位 -->
                        <value>WriteMapNullValue</value>
                        <!-- 數值欄位如果為null,輸出為0,而非null -->
                        <value>WriteNullNumberAsZero</value>
                        <!-- 字元型別欄位如果為null,輸出為"",而非null  -->
                        <value>WriteNullStringAsEmpty</value>
                        <!-- List欄位如果為null,輸出為[],而非null -->
                        <value>WriteNullListAsEmpty</value>
                        <!-- Boolean欄位如果為null,輸出為false,而非null -->
                        <value>WriteNullBooleanAsFalse</value>
                        <!-- 設定日期封裝json格式:yyyy-MM-dd HH:mm:ss -->
                        <value>WriteDateUseDateFormat</value>
                    </array>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

    <!-- 靜態資源配置 -->
    <mvc:resources mapping="/resources/**" location="/resources/"/>

    <!-- 對模型檢視名稱的解析,即在模型檢視名稱新增前後綴 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!-- 上傳限制 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 上傳檔案大小限制為31M，31*1024*1024 -->
        <property name="maxUploadSize" value="32505856"/>
    </bean>

</beans>
 

spring-mybatis.xml檔案

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd">

    <!-- 配置資料來源 -->
    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="url" value="${jdbc_url}"/>
        <property name="username" value="${jdbc_username}"/>
        <property name="password" value="${jdbc_password}"/>

        <!-- 初始化連線大小 -->
        <property name="initialSize" value="0"/>
        <!-- 連線池最大使用連線數量 -->
        <property name="maxActive" value="20"/>
        <!-- 連線池最大空閒 -->
        <property name="maxIdle" value="20"/>
        <!-- 連線池最小空閒 -->
        <property name="minIdle" value="0"/>
        <!-- 獲取連線最大等待時間 -->
        <property name="maxWait" value="60000"/>

        <property name="validationQuery" value="${validationQuery}"/>
        <property name="testOnBorrow" value="false"/>
        <property name="testOnReturn" value="false"/>
        <property name="testWhileIdle" value="true"/>

        <!-- 配置間隔多久才進行一次檢測，檢測需要關閉的空閒連線，單位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000"/>
        <!-- 配置一個連線在池中最小生存的時間，單位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="25200000"/>
        <!-- 開啟removeAbandoned功能 -->
        <property name="removeAbandoned" value="true"/>
        <!-- 1800秒，也就是30分鐘 -->
        <property name="removeAbandonedTimeout" value="1800"/>
        <!-- 關閉abanded連線時輸出錯誤日誌 -->
        <property name="logAbandoned" value="true"/>
        <!-- 監控資料庫 -->
        <property name="filters" value="mergeStat"/>
    </bean>

    <!-- Spring整合Mybatis -->
    <bean id="sqlSessionFactory" class="com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自動掃描Mapping.xml檔案 -->
        <property name="mapperLocations" value="classpath:com/http/mapper/*Mapper.xml"/>
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/>
        <property name="typeAliasesPackage" value="com.http.model"/>
        <property name="plugins">
            <array>
                <!-- 分頁外掛配置 -->
                <bean id="paginationInterceptor" class="com.baomidou.mybatisplus.plugins.PaginationInterceptor">
                </bean>
            </array>
        </property>
	    <!-- 全域性配置注入 -->
	    <property name="globalConfig" ref="globalConfig" />
	</bean>
	<bean id="globalConfig" class="com.baomidou.mybatisplus.entity.GlobalConfiguration">
	    <!--
			AUTO->`0`("資料庫ID自增")
		 	INPUT->`1`(使用者輸入ID")
			ID_WORKER->`2`("全域性唯一ID")
			UUID->`3`("全域性唯一ID")
		-->
	    <property name="idType" value="2" />
		<!--
			MYSQL->`mysql`
			ORACLE->`oracle`
			DB2->`db2`
			H2->`h2`
			HSQL->`hsql`
			SQLITE->`sqlite`
			POSTGRE->`postgresql`
			SQLSERVER2005->`sqlserver2005`
			SQLSERVER->`sqlserver`
		-->
		<!-- Oracle需要新增該項 -->
	    <!-- <property name="dbType" value="oracle" /> -->
	    <!-- 全域性表為下劃線命名設定 true -->
	    <!-- <property name="dbColumnUnderline" value="true" /> -->
        <!-- <property name="metaObjectHandler">
            <bean class="com.baomidou.springmvc.common.MyMetaObjectHandler" />
        </property> -->
	</bean>

    <!-- MyBatis 動態掃描  -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.http.dao"/>
    </bean>

    <!-- 配置事務管理 -->
    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 事務管理 屬性 -->
    <tx:advice id="transactionAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="append*" propagation="REQUIRED"/>
            <tx:method name="save*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="modify*" propagation="REQUIRED"/>
            <tx:method name="edit*" propagation="REQUIRED"/>
            <tx:method name="insert*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="remove*" propagation="REQUIRED"/>
            <tx:method name="repair" propagation="REQUIRED"/>

            <tx:method name="get*" propagation="REQUIRED" read-only="true"/>
            <tx:method name="find*" propagation="REQUIRED" read-only="true"/>
            <tx:method name="load*" propagation="REQUIRED" read-only="true"/>
            <tx:method name="search*" propagation="REQUIRED" read-only="true"/>
            <tx:method name="datagrid*" propagation="REQUIRED" read-only="true"/>

            <tx:method name="*" propagation="REQUIRED" read-only="true"/>
        </tx:attributes>
    </tx:advice>

    <!-- 配置切面事務傳播 -->
    <aop:config>
        <aop:pointcut id="transactionPointcut" expression="execution(* com.http.service..*.*(..))"/>
        <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice"/>
    </aop:config>

</beans>
 

mybatis-config.xml檔案

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD SQL Map Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<!--
 |   plugins在配置檔案中的位置必須符合要求，否則會報錯，順序如下:
 |   properties?, settings?,
 |   typeAliases?, typeHandlers?,
 |   objectFactory?,objectWrapperFactory?,
 |   plugins?,
 |   environments?, databaseIdProvider?, mappers?
 |-->
<configuration>
    <!--
     | 全域性配置設定
     |
     | 可配置選項                   預設值,     描述
     |
     | aggressiveLazyLoading       true,     當設定為‘true’的時候，懶載入的物件可能被任何懶屬性全部載入。否則，每個屬性都按需載入。
     | multipleResultSetsEnabled   true,     允許和不允許單條語句返回多個數據集（取決於驅動需求）
     | useColumnLabel              true,     使用列標籤代替列名稱。不同的驅動器有不同的作法。參考一下驅動器文件，或者用這兩個不同的選項進行測試一下。
     | useGeneratedKeys            false,    允許JDBC 生成主鍵。需要驅動器支援。如果設為了true，這個設定將強制使用被生成的主鍵，有一些驅動器不相容不過仍然可以執行。
     | autoMappingBehavior         PARTIAL,  指定MyBatis 是否並且如何來自動對映資料表字段與物件的屬性。PARTIAL將只自動對映簡單的，沒有巢狀的結果。FULL 將自動對映所有複雜的結果。
     | defaultExecutorType         SIMPLE,   配置和設定執行器，SIMPLE 執行器執行其它語句。REUSE 執行器可能重複使用prepared statements 語句，BATCH執行器可以重複執行語句和批量更新。
     | defaultStatementTimeout     null,     設定一個時限，以決定讓驅動器等待資料庫迴應的多長時間為超時
     | -->
    <settings>
        <!-- 這個配置使全域性的對映器啟用或禁用快取 -->
        <setting name="cacheEnabled" value="true"/>
        <!-- 全域性啟用或禁用延遲載入。當禁用時，所有關聯物件都會即時載入 -->
        <setting name="lazyLoadingEnabled" value="true"/>
        <setting name="multipleResultSetsEnabled" value="true"/>
        <setting name="useColumnLabel" value="true"/>
        <setting name="defaultExecutorType" value="REUSE"/>
        <setting name="defaultStatementTimeout" value="25000"/>
    </settings>

</configuration>
 

spring.xml檔案

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">

    <!-- 引入屬性檔案 -->
    <context:property-placeholder location="classpath:db.properties"/>

    <!-- Service包(自動注入) -->
    <context:component-scan base-package="com.http.service"/>

    <import resource="classpath:ssm/spring-mybatis.xml"/>
</beans>

web.xml檔案

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

	<display-name>HttpAPI</display-name>

	<!-- 載入Spring配置檔案 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:ssm/spring.xml</param-value>
	</context-param>

	<!-- 字符集 過濾器 -->
	<filter>
		<filter-name>encodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<!-- Spring監聽器 -->
	<listener>
		<description>Spring監聽器</description>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<!-- 防止Spring記憶體溢位監聽器 -->
	<listener>
		<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
	</listener>

	<!-- Spring MVC -->
	<servlet>
		<servlet-name>SpringMVC</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<description>SpringMVC</description>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:ssm/spring-mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>SpringMVC</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

	<!-- Session超時時間 -->
	<session-config>
		<session-timeout>30</session-timeout>
	</session-config>
</web-app>

db.properties檔案

validationQuery=SELECT 1
jdbc_url=jdbc:mysql://localhost:3306/db1?useUnicode=true&characterEncoding=UTF-8
jdbc_username=root
jdbc_password=root

log4j.properties檔案

log4j.rootLogger=DEBUG,CONSOLE,A
log4j.addivity.org.apache=false
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=DEBUG
log4j.appender.CONSOLE.layout.ConversionPattern=%d{yyyy-MM-dd HH\:mm\:ss} -%-4r [%t] %-5p  %x - %m%n
log4j.appender.CONSOLE.Target=System.out
#log4j.appender.CONSOLE.charset=utf-8
log4j.appender.CONSOLE.encoding=utf-8
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.A=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A.File=${catalina.home}/logs/yo_log/PurePro_
log4j.appender.A.DatePattern=yyyy-MM-dd'.log'
log4j.appender.A.layout=org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern=[FH_sys]  %d{yyyy-MM-dd HH\:mm\:ss} %5p %c{1}\:%L \: %m%n
log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=DEBUG
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

在webapp中添加個index.jsp。路徑對應spring-mvc.xml中配置的檢視解析路徑。Jsp中寫個著名的hello world。

Jsp內容

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
hello world
</body>
</html>

Pom.xml引入相關jar包，pom最下面的build部分如果沒有加的話，會因為JDK版本問題引起Java Resources有個紅叉，修改相應的JDK版本號，在專案上右鍵-->Maven-->Update project...紅叉就沒有了。

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.http</groupId>
	<artifactId>HttpAPI</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>war</packaging>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<spring.version>4.2.5.RELEASE</spring.version>
		<junit.version>4.12</junit.version>
		<druid.version>1.1.0</druid.version>
		<fastjson.version>1.2.8</fastjson.version>
		<mybaitsplus.version>2.1-gamma</mybaitsplus.version>
		<velocity.version>1.7</velocity.version>
		<mysql.version>5.1.38</mysql.version>
		<log4j.version>1.2.17</log4j.version>
		<slf4j.version>1.7.19</slf4j.version>
		<aspectjweaver.version>1.8.8</aspectjweaver.version>
		<fileupload.version>1.3.1</fileupload.version>
		<servlet.version>2.5</servlet.version>
		<jstl.version>1.2</jstl.version>
	</properties>

	<dependencies>
		<!-- JUnit -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>${junit.version}</version>
			<scope>test</scope>
		</dependency>

		<!-- Spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>

		<!-- Spring MVC -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>

		<!-- AOP -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
			<version>${aspectjweaver.version}</version>
		</dependency>

		<!-- FileUpload -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
			<version>${fileupload.version}</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>${jstl.version}</version>
		</dependency>

		<!-- Mybatis-Plus -->
		<dependency>
			<groupId>com.baomidou</groupId>
			<artifactId>mybatis-plus</artifactId>
			<version>${mybaitsplus.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.velocity</groupId>
			<artifactId>velocity</artifactId>
			<version>${velocity.version}</version>
		</dependency>

		<!-- Mysql -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>${mysql.version}</version>
		</dependency>

		<!-- Druid -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>${druid.version}</version>
		</dependency>

		<!-- FastJson -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>${fastjson.version}</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>${servlet.version}</version>
			<scope>provided</scope>
		</dependency>

		<!-- Log -->
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>${log4j.version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.0</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

稍微改造下SysUserController，使專案訪問根目錄進入index.jsp。

package com.http.controller;


import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.stereotype.Controller;

/**
 * <p>
 * 系統使用者表 前端控制器
 * </p>
 *
 * @author GR·cheng
 * @since 2017-11-17
 */
@Controller
@RequestMapping("/")
public class SysUserController {
	
	@RequestMapping("/")
    public ModelAndView index(ModelAndView modelAndView) {
        modelAndView.setViewName("index");
        return modelAndView;
    }
	
}

將專案新增到tomcat伺服器

雙擊伺服器，修改下專案訪問名

儲存並啟動伺服器，在瀏覽器中訪問localhost:8080

然後在controller中寫個簡單的查詢，瀏覽器訪問下

package com.http.controller;


import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import com.http.model.SysUser;
import com.http.service.SysUserService;

/**
 * <p>
 * 系統使用者表 前端控制器
 * </p>
 *
 * @author GR·cheng
 * @since 2017-11-17
 */
@Controller
@RequestMapping("/")
public class SysUserController {
	
   @Autowired
	private SysUserService userService;
	
	@RequestMapping("/")
    public ModelAndView index(ModelAndView modelAndView) {
        modelAndView.setViewName("index");
        return modelAndView;
    }
	
	@RequestMapping("/users")
	@ResponseBody
	public List<SysUser> users() {
		return userService.selectList(null);
	}
	
}

在瀏覽器中訪問下http://localhost:8080/users，看到頁面接收到的JSON資料說明框架一切OK了。

第二部分 使用HTTP工具類測試HTTP介面

1、新建HttpUtil.java，HttpTest.java。

2、controller中寫幾個http測試介面。

package com.http.controller;


import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import com.alibaba.fastjson.JSON;
import com.http.common.util.DateUtil;
import com.http.model.SysUser;
import com.http.service.SysUserService;

/**
 * <p>
 * 系統使用者表 前端控制器
 * </p>
 *
 * @author GR·cheng
 * @since 2017-11-17
 */
@Controller
@RequestMapping("/")
public class SysUserController {
	
	@Autowired
	private SysUserService userService;
	
	/**
	 * 
	 * 
	 * @Title: index
	 * @Description: 專案根目錄訪問index.jsp
	 * @param: @param modelAndView
	 * @param: @return
	 * @return: ModelAndView
	 * @user: GR·cheng
	 *
	 */
	@RequestMapping("/")
    public ModelAndView index(ModelAndView modelAndView) {
        modelAndView.setViewName("index");
        return modelAndView;
    }
	
	/**
	 * 
	 * 
	 * @Title: users
	 * @Description: 查詢所有users
	 * @param: @return
	 * @return: List<SysUser>
	 * @user: GR·cheng
	 *
	 */
	@ResponseBody
	@RequestMapping("/users")
	public List<SysUser> users() {
		List<SysUser> users = userService.selectList(null);
		return users;
	}
	
	/**
	 * 
	 * 
	 * @Title: getParams
	 * @Description: get方法提交
	 * @param: @param id
	 * @param: @param name
	 * @param: @param age
	 * @param: @param ctime
	 * @param: @return
	 * @return: SysUser
	 * @user: GR·cheng
	 *
	 */
	@ResponseBody
	@RequestMapping(value = "/API/getParams",method = RequestMethod.GET)
	public static SysUser getParams(Long id,String name,Integer age,String ctime) {
		SysUser user = new SysUser();
		user.setId(id);
		user.setName(name);
		user.setAge(age);
		user.setCtime(DateUtil.stringToDate(ctime,DateUtil.DATE_TEMPLATE_COMPLETE));
		return user;
	}
	
	/**
	 * 
	 * 
	 * @Title: postParams
	 * @Description: post方法提交
	 * @param: @param id
	 * @param: @param name
	 * @param: @param age
	 * @param: @param ctime
	 * @param: @return
	 * @return: SysUser
	 * @user: GR·cheng
	 *
	 */
	@ResponseBody
	@RequestMapping(value = "/API/postParams",method = RequestMethod.POST)
	public static SysUser postParams(Long id,String name,Integer age,String ctime) {
		SysUser user = new SysUser();
		user.setId(id);
		user.setName(name);
		user.setAge(age);
		user.setCtime(DateUtil.stringToDate(ctime,DateUtil.DATE_TEMPLATE_COMPLETE));
		return user;
	}
	
	/**
	 * 
	 * 
	 * @Title: postJson
	 * @Description: post方法提交json資料
	 * @param: @param param
	 * @param: @return
	 * @return: SysUser
	 * @user: GR·cheng
	 *
	 */
	@ResponseBody
	@RequestMapping(value = "/API/postJson",method = RequestMethod.POST)
	public static SysUser postJson(@RequestBody String param) {
		SysUser user = JSON.parseObject(param, SysUser.class);
		return user;
	}
	
}

3、編寫http工具類HttpUtil

package com.http.common.util;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

public class HttpUtil {

	/**
	 * 
	 * 
	 * @Title: getParams
	 * @Description: HTTP GET 請求
	 * @param: @param uri 請求地址
	 * @param: @param params 引數串
	 * @param: @return
	 * @return: String
	 * @user: GR·cheng
	 *
	 */
	public static String getParams(String uri, String params) {
		String result = "";
		BufferedReader reader = null;
		StringBuffer url = new StringBuffer();
		try {
			url.append(uri);
			url.append("?");
			url.append(params);// get的引數 xx=xx&yy=yy
			URL realUrl = new URL(url.toString());
			// 開啟和URL之間的連線
			URLConnection connection = realUrl.openConnection();
			// 設定通用的請求屬性
			connection.setRequestProperty("accept", "*/*");
			connection.setRequestProperty("Content-Type","text/html; charset=utf-8");
			connection.setRequestProperty("Charset", "UTF-8");
			connection.connect();
			// 定義 BufferedReader輸入流來讀取URL的響應
			reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
			String line;
			StringBuffer buffer = new StringBuffer();
			while ((line = reader.readLine()) != null) {
				buffer.append(line);
			}
			result = buffer.toString();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (reader != null) {
					reader.close();
				}
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * 
	 * 
	 * @Title: postParams
	 * @Description: HTTP POST 請求
	 * @param: @param uri 請求地址
	 * @param: @param params 引數串
	 * @param: @return
	 * @return: String
	 * @user: GR·cheng
	 *
	 */
	public static String postParams(String uri, String params) {
		URL url = null;
		String result = null;
		try {
			url = new URL(uri);
			HttpURLConnection connection = (HttpURLConnection) url
					.openConnection();
			connection.setRequestMethod("POST");
			// 傳送POST請求必須設定如下兩行
			connection.setDoOutput(true);
			connection.setDoInput(true);
			// 獲取URLConnection物件對應的輸出流
			PrintWriter printWriter = new PrintWriter(
					connection.getOutputStream());
			// 傳送請求引數
			printWriter.write(params);// post的引數 xx=xx&yy=yy
			// flush輸出流的緩衝
			printWriter.flush();
			// 開始獲取資料
			BufferedReader reader = new BufferedReader(
					new InputStreamReader(connection.getInputStream()));
			result = reader.readLine();
			reader.close();
			connection.disconnect();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}

	/**
	 * 
	 * 
	 * @Title: postJson
	 * @Description: HTTP POST請求方式提交JSON資料
	 * @param: @param uri 請求地址
	 * @param: @param object JSONObject
	 * @param: @return
	 * @param: @throws IOException
	 * @return: String
	 * @user: GR·cheng
	 *
	 */
	public static String postJson(String uri, JSONObject object) {
		String result = null;
		try {
			// 建立url資源
			URL url = new URL(uri);
			// 建立http連線
			HttpURLConnection connection = (HttpURLConnection) url
					.openConnection();
			// 設定允許輸出
			connection.setDoOutput(true);
			// 設定允許輸入
			connection.setDoInput(true);
			// 設定傳遞方式POST
			connection.setRequestMethod("POST");
			// 設定不用快取
			connection.setUseCaches(false);
			// 設定本次連線是否自動處理重定向
			connection.setInstanceFollowRedirects(true);
			// 設定文字型別
			connection.setRequestProperty("Content-Type",
					"application/json;charset=UTF-8");
			// 設定維持長連線
			connection.setRequestProperty("Connection", "Keep-Alive");
			// 設定文字字符集
			connection.setRequestProperty("Charset", "UTF-8");
			// 轉換為位元組陣列
			byte[] json = (JSON.toJSONString(object)).getBytes();
			// 設定文字長度
			connection.setRequestProperty("Content-Length",
					String.valueOf(json.length));
			// 開始連線請求
			connection.connect();
			DataOutputStream out = new DataOutputStream(
					connection.getOutputStream());
			out.write(json);
			out.flush();
			out.close();
			int code = connection.getResponseCode();
			if (HttpURLConnection.HTTP_OK == code) {
				BufferedReader reader = new BufferedReader(
						new InputStreamReader(connection.getInputStream()));
				result = reader.readLine();
				reader.close();
			}
			connection.disconnect();
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return result;
	}
}

4、寫個測試類測試下

package com.http.test;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.http.common.util.DateUtil;
import com.http.common.util.HttpUtil;
import com.http.model.SysUser;

public class HttpTest {
	
	private static String getParams = "http://localhost:8080/API/getParams";
	private static String postParams = "http://localhost:8080/API/postParams";
	private static String postJson = "http://localhost:8080/API/postJson";
	
	public static void main(String[] args) {
		testGetParams();
		testPostParams();
		testPostJson();
	}
	
	public static void testGetParams() {
		StringBuffer param = new StringBuffer();
		try {
			param.append("id=784972358981328902&name=");
			param.append(URLEncoder.encode("奈文摩爾","UTF-8"));
			param.append("&age=20");
			param.append("&ctime=");
			param.append(URLEncoder.encode("2017-11-11 11:11:11","UTF-8"));//get提交的引數是在url中的，帶有空格的引數必須轉譯
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		String result = HttpUtil.getParams(getParams, param.toString());
		System.out.println(result);
	}
	
	public static void testPostParams() {
		StringBuffer param = new StringBuffer();
		try {
			param.append("id=784972358981328902&name=");
			param.append(URLEncoder.encode("奈文摩爾","UTF-8"));
			param.append("&age=20");
			param.append("&ctime=2017-11-11 11:11:11");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		String result = HttpUtil.postParams(postParams, param.toString());
		System.out.println(result);
	}
	
	public static void testPostJson() {
		SysUser user = new SysUser();
		user.setId(784972358981328902L);
		user.setName("奈文摩爾");
		user.setAge(20);
		user.setCtime(DateUtil.stringToDate("2017-11-11 11:11:11",DateUtil.DATE_TEMPLATE_COMPLETE));
		JSONObject jsonObject = (JSONObject) JSON.toJSON(user);
		String result = HttpUtil.postJson(postJson, jsonObject);
		System.out.println(result);
	}

}

5、啟動專案，執行下HttpTest中的main函式

結果返回都正確，一切OK。