spring-boot-starter-web 示例

1. User.java

public class User {

    private String name;

    private Integer age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

2. BasicController.java

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class BasicController {

    // http://127.0.0.1:8080/hello?name=lisi
    @RequestMapping("/hello")
    @ResponseBody
    public String hello(@RequestParam(name = "name", defaultValue = "unknown user") String name) {
        return "Hello " + name;
    }

    // http://127.0.0.1:8080/user
    @RequestMapping("/user")
    @ResponseBody
    public User user() {
        User user = new User();
        user.setName("theonefx");
        user.setAge(666);
        return user;
    }

    // http://127.0.0.1:8080/save_user?name=newName&age=11
    @RequestMapping("/save_user")
    @ResponseBody
    public String saveUser(User u) {
        return "user will save: name=" + u.getName() + ", age=" + u.getAge();
    }

    // http://127.0.0.1:8080/html
    @RequestMapping("/html")
    public String html(){
        return "index.html";
    }

    @ModelAttribute
    public void parseUser(@RequestParam(name = "name", defaultValue = "unknown user") String name
            , @RequestParam(name = "age", defaultValue = "12") Integer age, User user) {
        user.setName("zhangsan");
        user.setAge(18);
    }
}

3. PathVariableController.java

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 org.springframework.web.bind.annotation.ResponseBody;

/**
 * @author <a href="mailto:chenxilzx1@gmail.com">theonefx</a>
 */
@Controller
public class PathVariableController {

    // http://127.0.0.1:8080/user/123/roles/222
    @RequestMapping(value = "/user/{userId}/roles/{roleId}", method = RequestMethod.GET)
    @ResponseBody
    public String getLogin(@PathVariable("userId") String userId, @PathVariable("roleId") String roleId) {
        return "User Id : " + userId + " Role Id : " + roleId;
    }

    // http://127.0.0.1:8080/javabeat/somewords
    @RequestMapping(value = "/javabeat/{regexp1:[a-z-]+}", method = RequestMethod.GET)
    @ResponseBody
    public String getRegExp(@PathVariable("regexp1") String regexp1) {
        return "URI Part : " + regexp1;
    }
}