定义:
REST是一个标准,一种规范,遵循REST风格可以使开发的接口通用,便于调用者理解接口的作用。
规则:
GET 用来获取资源,查
POST 用来新建资源,增
PUT 用来更新资源,改
DELETE 用来删除资源,删
对比:
http://localhost:8080/myweb/getDogs --> GET /rest/api/dogs 查询
http://localhost:8080/myweb/addDogs --> POST /rest/api/dogs 添加
http://localhost:8080/myweb/updateDogs/:dog_id --> PUT /rest/api/dogs/:dog_id 修改
http://localhost:8080/myweb/deleteDogs/:dog_id --> DELETE /rest/api/dogs/:dog_id 删除
使用步骤:
1、在web.xml中添加HttpPutFormContentFilter过滤器
<filter>
<filter-name>HttpPutFormContentFilter</filter-name>
<filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HttpPutFormContentFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
2、后台修改数据
/**
* 修改员工信息
* @param employee
* @return
*/
@RequestMapping(value = "/emp/{empId}", method = RequestMethod.PUT)
@ResponseBody
public Msg updateEmp(Employee employee) {
employeeService.updateEmp(employee);
return Msg.success();
}
/**
* 删除员工
* REST风格的DELETE,要加上@PathVariable注解
* @param empId
* @return
*/
@RequestMapping(value="/emp/{empId}",method=RequestMethod.DELETE)
@ResponseBody
public Msg delEmp(@PathVariable("empId")Integer empId){
employeeService.delEmp(empId);
return Msg.success();
}
3、前端页面修改数据
$.ajax({
type : "PUT",
url : "${APP_PATH}/emp/"+empId,
data : $("#emps_update_modal form").serialize(),
success : function(result) {
alert(result);
}
});