标签:return String SpringMVC age 笔记 响应 save public 请求
请求映射路径
- 多人开发,每人设置不同的请求路径,冲突问题如何解决?
设置模块名作为请求路径前缀
@Controller
//设置整体请求路径前缀
@RequestMapping("/hello")
public class HelloController {
//请求方式为-->localhost/hello/save
@RequestMapping("/save")
@ResponseBody
public String save(){
return "{'module':'springmvc'}";
}
//请求方式为-->localhost/hello/save
@RequestMapping("/delete")
@ResponseBody
public String delete(){
return "{'module':'springmvc delete'}";
}
}
请求方式
get请求
@Controller
public class HelloController {
//请求方式为-->localhost/hello/save?name=输入值&age=输入值2
@RequestMapping("/save")
@ResponseBody
public String save(String name,int age){
return "name = "+ name+"\n"+"age = "+ age;
}
}
测试结果
post请求
java程序不变,post使用请求体发送表单
post请求中文乱码的情况(在Servlet容器内设置过滤器)
public class ServletContainersInitConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class[]{SpringConfig.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class[]{{SpringMVCConfig.class}};
}
@Override
protected String[] getServletMappings() {
return new String[]{"/"};
}
@Override
protected Filter[] getServletFilters() {
CharacterEncodingFilter filter = new CharacterEncodingFilter("UTF-8");
return new Filter[]{filter};
}
}
请求参数
1. 绑定请求参数和形参的映射关系
@Controller
public class HelloController {
//请求方式为-->localhost/hello/save?name=输入值&age=输入值2
@RequestMapping("/save")
@ResponseBody
//将请求参数name映射到形参username上
//请求方式为-->localhost/hello/save?name=输入值&age=输入值2
public String save(@RequestParam("name")String username,int age){
return "name = "+ name+"\n"+"age = "+ age;
}
}
2. 实体类传参
@Controller
public class HelloController {
//请求方式为-->localhost/hello/save?name=输入值&age=输入值2
@RequestMapping("/user")
@ResponseBody
//实体类:根据构造函数的形参名自动填充
public String save(User user){
System.out.println(user);
return user.toString();;
}
}
public class User {
private String username;
private int age ;
private Address address;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
@Override
public String toString() {
return "User{" +
"username='" + username + '\'' +
", age=" + age +
", address=" + address +
'}';
}
}
public class Address {
private String location;
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
@Override
public String toString() {
return "Address{" +
"location='" + location + '\'' +
'}';
}
}
结果
3. 列表数组传参
@Controller
public class HelloController {
@RequestMapping("/array")
@ResponseBody
public String user(String[] hobby){
System.out.println(Arrays.toString(hobby));
return Arrays.toString(hobby);
}
}
标签:return,String,SpringMVC,age,笔记,响应,save,public,请求 来源: https://www.cnblogs.com/sleepyheadLK/p/16464516.html
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