目錄:

一.執行springboot_freemarker工程

二.Springboot-freemarker工程配置詳解

三.小結

一.執行springboot_freemarker工程

    git clone 下載工程springboot_repository，專案地址見[email protected]:snail-wj/springboot_repository.git

    1.資料庫準備

        建庫
        create database springbootdb;
        建表
        create TABLE person(
id int AUTO_INCREMENT PRIMARY KEY,
person_name VARCHAR(50) NOT NULL ,
person_gender VARCHAR(50) NOT NULL ,
description VARCHAR(50) NOT NULL
);

    2.專案結構介紹

org.spring.springboot.controller - Controller 層
org.spring.springboot.dao - 資料操作層 DAO
org.spring.springboot.domain - 實體類
org.spring.springboot.service - 業務邏輯層
Application - 應用啟動類
resources/application.properties - 應用配置檔案，應用啟動會自動讀取配置
resources/web - *.ftl檔案，是 FreeMarker 檔案配置路徑。在 application.properties 配置
resources/mapper - DAO Maper XML 檔案

    3.執行工程

        右鍵執行springboot-freemarker工程Application應用啟動類的main函式,然後在瀏覽器訪問:
        獲取ID編號為1的城市資訊
localhost:8080/api/city/1
        獲取城市列表頁面
localhost:8080/api/city

二.Springboot-freemarker工程配置詳解

        1.pom.xml檔案詳解

        

<?xml version="1.0" encoding="UTF-8"?>
	<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>springboot</groupId>
		<artifactId>springboot-freemarker</artifactId>
		<version>0.0.1-SNAPSHOT</version>
		<name>springboot-freemarker :: Spring Boot 整合 FreeMarker 案例</name>
	 
		<!-- Spring Boot 啟動父依賴 -->
		<parent>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-parent</artifactId>
			<version>1.5.1.RELEASE</version>
		</parent>
	 
		<properties>
			<mybatis-spring-boot>1.2.0</mybatis-spring-boot>
			<mysql-connector>5.1.39</mysql-connector>
		</properties>
	 
		<dependencies>
			<!-- Spring Boot Freemarker 依賴 -->
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter-freemarker</artifactId>
			</dependency>
	 
			<!-- Spring Boot Web 依賴 -->
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter-web</artifactId>
			</dependency>
	 
			<!-- Spring Boot Test 依賴 -->
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter-test</artifactId>
				<scope>test</scope>
			</dependency>
	 
			<!-- Spring Boot Mybatis 依賴 -->
			<dependency>
				<groupId>org.mybatis.spring.boot</groupId>
				<artifactId>mybatis-spring-boot-starter</artifactId>
				<version>${mybatis-spring-boot}</version>
			</dependency>
	 
			<!-- MySQL 連線驅動依賴 -->
			<dependency>
				<groupId>mysql</groupId>
				<artifactId>mysql-connector-java</artifactId>
				<version>${mysql-connector}</version>
			</dependency>
	 
			<!-- Junit -->
			<dependency>
				<groupId>junit</groupId>
				<artifactId>junit</artifactId>
				<version>4.12</version> 
			</dependency>
		</dependencies>
	</project>
 

        我們在pom.xml中增加Spring Boot FreeMarker依賴

    2.配置FreeMarker

        然後在application.properties中加入FreeMarker相關配置:
## Freemarker 配置
## 檔案配置路徑
spring.freemarker.template-loader-path=classpath:/web/
spring.freemarker.cache=false
spring.freemarker.charset=UTF-8
spring.freemarker.check-template-location=true
spring.freemarker.content-type=text/html
spring.freemarker.expose-request-attributes=true
spring.freemarker.expose-session-attributes=true
spring.freemarker.request-context-attribute=request
spring.freemarker.suffix=.ftl

    3.展示層Controller詳解

            

	/**
		 * @author WJ
		 * @date 2018/04/26
		 */
		@Controller
		public class CityController {

			@Autowired
			private CityService cityService;

			@RequestMapping(value = "/api/city/{id}", method = RequestMethod.GET)
			public String findOne(Model model, @PathVariable("id") Long id){
				model.addAttribute("city" , cityService.findOne(id));
				return "city";
			}


			@RequestMapping(value = "/api/city", method = RequestMethod.GET)
			public String findAll(Model model){
				List<City> cityList = cityService.findAll();
				model.addAttribute("cityList", cityList);
				return "cityList";
			}
		}

        a.這裡不是走HTTP+JSON模式,使用了@Controller而不是先前的@RestController        b.方法返回值是String型別，和.application.properties配置的Freemarker檔案
配置路徑下的各個*.ftl檔名一致，這樣才會準確的把資料渲染到ftl檔案裡面進
行展示        c.用Model類，向Model加入資料，並指定在該資料在Freemarker取值指定的名稱。

三.小結

    再次感謝泥瓦匠BySocket