SpringMVC4.0实现rest风格接口，json格式请求和返回
1.项目结构和引入的包：
2.web.xml:
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3.springmvc-servlet.xml:
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-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
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4.实体类Student.java:
package test;
public class Student {
private int id;
private String name;
private int age;
private String sex;
private String major;
public Student() {
}
//此方法会将默认的无参构造方法给覆盖掉，必须加上上面的无参构造方法
public Student(int id, String name, int age, String sex, String major) {
super();
this.id = id;
this.name = name;
this.age = age;
this.sex = sex;
this.major = major;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getMajor() {
return major;
}
public void setMajor(String major) {
this.major = major;
}
}
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5.RestController.java:
package test;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
import javax.servlet.http.HttpSession;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
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;
@Controller
@RequestMapping("/rest")
public class RestController {
//存储学生信息
private List
//初始化
public RestController(){
Student s1 = new Student(2017001, "张三", 23, "男", "计算机");
Student s2 = new Student(2017002, "李四", 23, "男", "计算机");
Student s3 = new Student(2017003, "王五", 23, "男", "计算机");
sList.add(s1);
sList.add(s2);
sList.add(s3);
}
//查询所有
@ResponseBody
@RequestMapping(value="/student",method=RequestMethod.GET)
public Object getAll(){
System.out.println("GET:ALL");
return sList;
}
//查询单个
@ResponseBody
@RequestMapping(value="/student/{id}",method=RequestMethod.GET)
public Object getOne(@PathVariable("id") Integer id){
System.out.println("GET:"+id);
List
for(Student s : sList){
if(s.getId()==id){
selectList.add(s);
}
}
return selectList;
}
//添加
@ResponseBody
@RequestMapping(value="/student",method=RequestMethod.POST)
public Object post(@RequestBody Student student){
System.out.println("POST:"+student.getId());
sList.add(student);
return sList;
}
//修改
@ResponseBody
@RequestMapping(value="/student/{id}",method=RequestMethod.PUT)
public Object put(@PathVariable("id") Integer id,@RequestBody Student student){
System.out.println("PUT:"+id);
List
for (Student s : sList) {
if(s.getId()==id){
student.setId(s.getId());
removeList.add(s);
}
}
sList.removeAll(removeList);
sList.add(student);
return sList;
}
//删除所有
@ResponseBody
@RequestMapping(value="/student",method=RequestMethod.DELETE)
public Object delete(){
System.out.println("DELETE:ALL");
sList.clear();
return sList;
}
//删除单个
@ResponseBody
@RequestMapping(value="/student/{id}",method=RequestMethod.DELETE)
public Object delete(@PathVariable("id") Integer id){
System.out.println("DELETE:"+id);
List
for (Student s : sList) {
if(s.getId()==id){
removeList.add(s);
}
}
sList.removeAll(removeList);
return sList;
}
}
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6.利用postman测试接口(本例子是仿造学生表的增删改查)：
(1)GET查询所有：localhost:8080/springmvc/rest/student
(2)GET查询单个：localhost:8080/springmvc/rest/student/2017001
(3)POST提交单个（先设置好类型和json数据）：localhost:8080/springmvc/rest/student
(4)PUT修改单个（先设置好类型和json数据）：localhost:8080/springmvc/rest/student/2017004
(5)DELETE删除单个：localhost:8080/springmvc/rest/student/2017001
(5)DELETE删除所有：localhost:8080/springmvc/rest/student
源码：
http://download.csdn.net/download/m0_37459945/10165177
https://github.com/15629168655/springmvc-rest-json
参考：
http://blog.csdn.net/xinyuan_java/article/details/46696703
http://blog.csdn.net/w605283073/article/details/51338765
https://www.cnblogs.com/cnblog-long/p/6547380.html
http://blog.csdn.net/lutinghuan/article/details/46820023
http://blog.csdn.net/lzj3462144/article/details/76980779?foxhandler=RssReadRenderProcessHandler
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作者：-bin_bin-
来源：CSDN
原文：https://blog.csdn.net/m0_37459945/article/details/78848023
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