springmvc框架搭建案例
阿新 • • 發佈：2019-06-19
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>RestEmp</display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <filter> <!-- 亂碼過濾要放在第一行 --> <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name> <!-- 過濾器用/*過濾所有請求，servlet用/來過濾所有請求，包括靜態的，需要在springmvc.xml中加註解進行處理 <mvc:default-servlet-handler/>靜態資源交由tomcat預設的servlet處理，非靜態的交由dispatcherServlet處理 <mvc:annotation-driven />開啟註解驅動 --> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 保證可以通過表單提交PUT,DELETE方式的請求 --> <filter> <filter-name>HiddenHttpMethodFilter</filter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class> </filter> <filter-mapping> <filter-name>HiddenHttpMethodFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- The front controller of this Spring Web application, responsible for handling all application requests --> <servlet> <servlet-name>springDispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!-- 指定springmvc配置檔案所在位置 --> <param-value>classpath:springMVC.xml</param-value> </init-param> <!-- 專案啟動時載入此DispatcherServlet這個Servlet 當值為正數，專案啟動時載入，負數或者0請求黨文時載入 --> <load-on-startup>1</load-on-startup> </servlet> <!-- Map all requests to the DispatcherServlet for handling --> <servlet-mapping> <servlet-name>springDispatcherServlet</servlet-name> <!-- / DispatcherServlet會幫我們截獲所有的url請求，並將請求傳送給對應的controller。 對，是所有的請求！也包括靜態檔案，比如.js檔案，圖片檔案，css檔案的請求。404--> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
springmvc.xml
<?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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd 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-4.0.xsd"> <context:component-scan base-package="com.atguigu.rest.crud"></context:component-scan> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/view/"></property> <property name="suffix" value=".jsp"></property> </bean> <mvc:default-servlet-handler/> <mvc:annotation-driven /> </beans>
package com.atguigu.rest.crud.bean; public class Department { private Integer id; private String departmentName; public Department() { // TODO Auto-generated constructor stub } public Department(int i, String string) { this.id = i; this.departmentName = string; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getDepartmentName() { return departmentName; } public void setDepartmentName(String departmentName) { this.departmentName = departmentName; } @Override public String toString() { return "Department [id=" + id + ", departmentName=" + departmentName + "]"; } }
package com.atguigu.rest.crud.bean;
public class Employee {
private Integer id;
private String lastName;
private String email;
//1 male, 0 female
private Integer gender;
private Department department;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Integer getGender() {
return gender;
}
public void setGender(Integer gender) {
this.gender = gender;
}
public Department getDepartment() {
return department;
}
public void setDepartment(Department department) {
this.department = department;
}
@Override
public String toString() {
return "Employee [id=" + id + ", lastName=" + lastName + ", email="
+ email + ", gender=" + gender + ", department=" + department
+ "]";
}
public Employee(Integer id, String lastName, String email, Integer gender,
Department department) {
super();
this.id = id;
this.lastName = lastName;
this.email = email;
this.gender = gender;
this.department = department;
}
public Employee() {
// TODO Auto-generated constructor stub
}
}
package com.atguigu.rest.crud.controller;
import java.util.Collection;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.atguigu.rest.crud.bean.Department;
import com.atguigu.rest.crud.bean.Employee;
import com.atguigu.rest.crud.dao.DepartmentDao;
import com.atguigu.rest.crud.dao.EmployeeDao;
public class EmpController_Old {
@Autowired
private EmployeeDao employeeDao;
@Autowired
private DepartmentDao departmentDao;
/**
* 獲取所有的員工資訊
* @param map
* @return
*/
@RequestMapping(value="/emps")
public String getAll(Map<String, Object> map) {
Collection<Employee> emps = employeeDao.getAll();
map.put("emps", emps);
return "list";
}
/**
* 跳轉到新增頁面
* @return
*/
@RequestMapping(value="/emp", method=RequestMethod.GET)
public String toAdd(Map<String, Object> map) {
Collection<Department> depts = departmentDao.getDepartments();
map.put("depts", depts);
return "add";
}
/**
* 新增員工資訊
* @param employee
* @return
*/
@RequestMapping(value="/emp", method=RequestMethod.POST)
public String addEmp(Employee employee) {
employeeDao.save(employee);
return "redirect:/emps";
}
/**
* 獲取要回顯的資料，跳轉到修改頁面，並回顯
* @param id
* @param map
* @return
*/
@RequestMapping(value="/emp/{id}", method=RequestMethod.GET)
public String toUpdate(@PathVariable("id") Integer id, Map<String, Object> map) {
//獲取要修改的員工資訊
Employee emp = employeeDao.get(id);
//所有的部門資訊，供使用者選擇
Collection<Department> depts = departmentDao.getDepartments();
map.put("emp", emp);
map.put("depts", depts);
return "update";
}
@RequestMapping(value="/emp", method=RequestMethod.PUT)
public String updateEmp(Employee employee) {
employeeDao.save(employee);//修改
return "redirect:/emps";
}
}
package com.atguigu.rest.crud.dao;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.springframework.stereotype.Repository;
import com.atguigu.rest.crud.bean.Department;
@Repository
public class DepartmentDao {
private static Map<Integer, Department> departments = null;
static{
departments = new HashMap<Integer, Department>();
departments.put(101, new Department(101, "D-AA"));
departments.put(102, new Department(102, "D-BB"));
departments.put(103, new Department(103, "D-CC"));
departments.put(104, new Department(104, "D-DD"));
departments.put(105, new Department(105, "D-EE"));
}
public Collection<Department> getDepartments(){
return departments.values();
}
public Department getDepartment(Integer id){
return departments.get(id);
}
}
package com.atguigu.rest.crud.dao;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.atguigu.rest.crud.bean.Department;
import com.atguigu.rest.crud.bean.Employee;
@Repository
public class EmployeeDao {
private static Map<Integer, Employee> employees = null;
@Autowired
private DepartmentDao departmentDao;
static{
employees = new HashMap<Integer, Employee>();
employees.put(1001, new Employee(1001, "E-AA", "[email protected]", 1, new Department(101, "D-AA")));
employees.put(1002, new Employee(1002, "E-BB", "[email protected]", 1, new Department(102, "D-BB")));
employees.put(1003, new Employee(1003, "E-CC", "[email protected]", 0, new Department(103, "D-CC")));
employees.put(1004, new Employee(1004, "E-DD", "[email protected]", 0, new Department(104, "D-DD")));
employees.put(1005, new Employee(1005, "E-EE", "[email protected]", 1, new Department(105, "D-EE")));
}
private static Integer initId = 1006;
public void save(Employee employee){
if(employee.getId() == null){
employee.setId(initId++);
}
employee.setDepartment(departmentDao.getDepartment(employee.getDepartment().getId()));
employees.put(employee.getId(), employee);
}
public Collection<Employee> getAll(){
return employees.values();
}
public Employee get(Integer id){
return employees.get(id);
}
public void delete(Integer id){
employees.remove(id);
}
}
list.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>展示員工資訊</title>
<link rel="stylesheet" href="${pageContext.servletContext.contextPath }/css/index_work.css" />
</head>
<body>
<table>
<tr>
<th>ID</th>
<th>LASTNAME</th>
<th>EMAIL</th>
<th>GENDER</th>
<th>DEPARTMENTNAME</th>
<th>OPTION(<a href="emp">ADD</a>)</th>
</tr>
<c:forEach items="${emps }" var="emp">
<tr>
<td>${emp.id }</td>
<td>${emp.lastName }</td>
<td>${emp.email }</td>
<td>${emp.gender==0?'女':'男' }</td>
<td>${emp.department.departmentName }</td>
<td>
<a href="emp/${emp.id }">UPDATE</a>
<a href="emp">DELETE</a>
</td>
</tr>
</c:forEach>
</table>
</body>
</html>add.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>新增員工資訊</title>
<link rel="stylesheet" href="${pageContext.servletContext.contextPath }/css/index_work.css" />
</head>
<body>
<form action="emp" method="post">
<table>
<tr>
<th colspan="2">新增員工資訊</th>
</tr>
<tr>
<td>LASTNAME</td>
<td>
<input type="text" name="lastName" />
</td>
</tr>
<tr>
<td>EMAIL</td>
<td>
<input type="text" name="email" />
</td>
</tr>
<tr>
<td>GENDER</td>
<td>
<input type="radio" name="gender" value="1" />男
<input type="radio" name="gender" value="0" />女
</td>
</tr>
<tr>
<td>DEPARTMENT</td>
<td>
<select name="department.id">
<option>-SELECT DEPARTMENT-</option>
<c:forEach items="${depts }" var="dept">
<option value="${dept.id }">${dept.departmentName }</option>
</c:forEach>
</select>
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="ADD" />
</td>
</tr>
</table>
</form>
</body>
</html>update.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>修改員工資訊</title>
<link rel="stylesheet" href="${pageContext.servletContext.contextPath }/css/index_work.css" />
</head>
<body>
<form action="${pageContext.servletContext.contextPath }/emp" method="post">
<input type="hidden" name="id" value="${emp.id }" />
<input type="hidden" name="_method" value="PUT" />
<table>
<tr>
<th colspan="2">修改員工資訊</th>
</tr>
<tr>
<td>LASTNAME</td>
<td>
<input type="text" name="lastName" value="${emp.lastName }" />
</td>
</tr>
<tr>
<td>EMAIL</td>
<td>
<input type="text" name="email" value="${emp.email }" />
</td>
</tr>
<tr>
<td>GENDER</td>
<td>
<input type="radio" name="gender" value="1" ${emp.gender == 1?'checked':'' } />男
<input type="radio" name="gender" value="0" ${emp.gender == 0?'checked':'' } />女
<input type="radio" name="gender" value="1" <c:if test="${emp.gender == 1 }">checked="checked"</c:if> />男
<input type="radio" name="gender" value="0" <c:if test="${emp.gender == 0 }">checked="checked"</c:if> />女
</td>
</tr>
<tr>
<td>DEPARTMENT</td>
<td>
<select name="department.id">
<option>-SELECT DEPARTMENT-</option>
<c:forEach items="${depts }" var="dept">
<option value="${dept.id }" ${dept.id == emp.department.id?'selected':'' }>${dept.departmentName }</option>
</c:forEach>
</select>
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="UPDATE" />
</td>
</tr>
</table>
</form>
</body>
</html>