Restful风格的curd

编程语言 2018-05-12 23:17:36 阅读次数: 0

Restful风格的curd

package com.hous.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.hous.crud.bean;

import java.util.Date;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.format.annotation.NumberFormat;

public class Employee {

	private Integer id;
	private String lastName;

	private String email;
	//1 male, 0 female
	private Integer gender;
	
	private Department department;
	
	@DateTimeFormat(pattern="yyyy-MM-dd")
	private Date birth;
	
	@NumberFormat(pattern="#,###,###.#")
	private Float salary;

	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;
	}

	public Date getBirth() {
		return birth;
	}

	public void setBirth(Date birth) {
		this.birth = birth;
	}

	public Float getSalary() {
		return salary;
	}

	public void setSalary(Float salary) {
		this.salary = salary;
	}

	@Override
	public String toString() {
		return "Employee [id=" + id + ", lastName=" + lastName + ", email="
				+ email + ", gender=" + gender + ", department=" + department
				+ ", birth=" + birth + ", salary=" + salary + "]";
	}

	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.hous.crud.controller;

import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import com.hous.crud.bean.Department;
import com.hous.crud.bean.Employee;
import com.hous.crud.dao.DepartmentDao;
import com.hous.crud.dao.EmployeeDao;

@Controller
public class EmployeeController {
	
	@Autowired
	private EmployeeDao employeeDao;
	@Autowired
	private DepartmentDao departmentDao;
	
//	@ModelAttribute
//	public void getEmployee(@RequestParam(value="id", required=false) Integer id, 
//			Map<String,Object> map) {
//		if(id != null) {
//			map.put("employee", employeeDao.get(id));
//		}
//	}
	
	/**
	 * 回显
	 * @param map
	 * @return
	 */
	@RequestMapping(value="/emp", method=RequestMethod.GET)
	private String input(Map<String, Object> map) {
		map.put("depts", departmentDao.getDepartments());
		map.put("employee", new Employee());
		return "input";
	}
	
	@RequestMapping(value="/emp/{id}", method=RequestMethod.GET)
	private String input(@PathVariable Integer id, Map<String, Object> map) {
		map.put("depts", departmentDao.getDepartments());
		map.put("employee", employeeDao.get(id));
		return "input";
	}
	
	@RequestMapping(value="/emp", method=RequestMethod.POST)
	private String add(Employee employee){
		employeeDao.save(employee);
		return "redirect:/list";
	}
	
	@RequestMapping(value="/emp", method=RequestMethod.PUT)
	private String update(Employee employee){
		employeeDao.save(employee);
		return "redirect:/list";
	}
	
	@RequestMapping("/list")
	private String list(Map<String, Object> map) {
		map.put("employees", employeeDao.getAll());
		return "list";
	}
	
	@RequestMapping(value="/emp/{id}", method=RequestMethod.DELETE)
	private String delete(@PathVariable Integer id) {
		employeeDao.delete(id);
		return "redirect:/list";
	}

}

package com.hous.crud.dao;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.springframework.stereotype.Repository;

import com.hous.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.hous.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.hous.crud.bean.Department;
import com.hous.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);
	}
}

<?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"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.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-4.2.xsd">

	<!-- 自动扫描bean -->
	<context:component-scan base-package="com.hous.crud"></context:component-scan>
	<!-- 配置视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/views/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
	<!-- 解决静态资源路径问题 -->
	<mvc:default-servlet-handler/>
	
	<mvc:annotation-driven/>
</beans>

<%@ page import="java.util.*"%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>添加雇员信息</title>
</head>
<body>
<!-- 
1.why使用form标签
快速开发页面，方便表单值的回显 
2.注意
可以通过modelAttribute指定绑定的模型类型
若没有指定，则读取request的commond的表单bean
若该属性值也不存在则报错
-->

<form:form action="${pageContext.request.contextPath}/emp" method="POST" modelAttribute="employee">
<table>
	<!-- id为整数类型 -->
	<c:if test="${employee.id == null }">
		<tr><th>First name</th><td><form:input path="lastName"/></td></tr>
	</c:if>
	<c:if test="${employee.id != null }">
		<form:hidden path="id"/>
		<input type="hidden" value="PUT" name="_method"/>
	</c:if>
	<tr><th>Email${employee.id}</th><td><form:input path="email"/></td></tr>
	<%
		Map<String, String> genders = new HashMap<String, String>();
		genders.put("0","Male");
		genders.put("1","Female");
		request.setAttribute("genders", genders);
	%>
	<tr><th>Gender</th><td><form:radiobuttons path="gender" items="${genders }"/></td></tr>
	<tr><th>Department</th><td><form:select path="department.id" items="${depts}"
		itemLabel="departmentName" itemValue="id" /></td></tr>
</table>
<input type="submit" value="提交"/>
</form:form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>列表信息</title>
<script type="text/javascript" src="${pageContext.request.contextPath}/scripts/jquery.js"></script>
<script type="text/javascript">
	$(function(){
		$('.delete').click(function(){
			var href=$(this).attr("href");
			$("form").attr("action", href).submit();
			return false;
			
			/*********证明springmvc支持DELETE***********/
			/* $.ajax({
				url:href,
				type: 'DELETE',
				success: function(data){
					//alert(data);
				},
			}); */
		});
	})
</script>
</head>
<body>
<!-- 转换post为delete方法 -->
	<form action="" method="post">
		<input type="hidden" name="_method" value="DELETE"/>
	</form>

	<c:if test="${empty requestScope.employees}">
	没有员工信息
	</c:if>
	<c:if test="${!empty requestScope.employees}">
		<table border="1px" cellspacing="0" cellpadding="10">
			<c:forEach items="${requestScope.employees}" var="employee">
				<tr>
					<td>${employee.id}</td>
					<td>${employee.lastName}</td>
					<td>${employee.email}</td>
					<td>${employee.gender == '1' ? 'Female' : 'Male'}</td>
					<td>${employee.department.id}${employee.department.departmentName}</td>
					<td><a href="${pageContext.request.contextPath}/emp/${employee.id }" class="delete">删除</a></td>
					<td><a href="${pageContext.request.contextPath}/emp/${employee.id }" >修改</a></td>
				</tr>
			</c:forEach>
		</table>
	</c:if>
	<br/><br/>
	<a href="${pageContext.request.contextPath}/emp">添加雇员信息</a>
</body>
</html>
<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/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.hous.spring</groupId>
	<artifactId>springmvc-2</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>springmvc-2 Maven Webapp</name>
	<url>http://maven.apache.org</url>
	<!-- 自定义变量 -->
	<properties>
		<org.springframework.version>4.2.1.RELEASE</org.springframework.version>
	</properties>
	<dependencies>
		<!-- 添加Spring-core包 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>
		<!-- 添加spring-context包 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>
		<!-- 添加spring-context-support包 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>
		<!-- 添加spring-beans包 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>
		<!-- 面向切面 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>
		<!-- jdbcTemplate开发 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>
		<!-- spring MVC -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${org.springframework.version}</version>
		</dependency>

		<!-- 单元测试 -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.11</version>
			<scope>test</scope>
		</dependency>
		<!-- c3p0数据源 -->
		<dependency>
			<groupId>c3p0</groupId>
			<artifactId>c3p0</artifactId>
			<version>0.9.1.1</version>
		</dependency>
		<!-- 添加mysql驱动包 -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.30</version>
		</dependency>
		<!-- fastjson解析json -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.9</version>
		</dependency>
		<!-- servlet相关 -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
		</dependency>
		<!-- jstl标签 -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>

	</dependencies>
	<build>
		<finalName>springmvc-2</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.1</version>
				<configuration>
					<source>1.7</source>
					<target>1.7</target>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

<?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"
	version="2.5">
	
	<!-- 处理请求方法,将POST请求转换成PUT,DELETE -->
	<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>
			<param-value>classpath:springmvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<!-- Map all requests to the DispatcherServlet for handling -->
	<servlet-mapping>
		<servlet-name>springDispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
</web-app>

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