Rumah > Soal Jawab > teks badan
在用springmvc返回json串的时候,页面上只显示一个键值对,如图
目的是要获取这个样子的
{"text":"文本","flag":"文本"}
为什么会出现这种只有第一个键值对的情况。
contraller
import com.dcxm.stu.bean.Message;
import com.dcxm.stu.bean.Student;
import com.dcxm.stu.service.RegisterService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;
@RestController
@RequestMapping("/student")
public class RegisterController {
private Student student = new Student();
@Autowired
private RegisterService registerService;
@RequestMapping(value = "/register")
public Message register(HttpServletRequest request, Model model) {
student.setTelphone("13245648");
student.setPassword("123465");
System.out.println(registerService.studentRegister(student));
return registerService.studentRegister(student);
}
}
在这个代码的末尾输出返回值任就是 正确的信息,但是在网页上显示就不真确了。
RegisterService
import com.dcxm.stu.bean.Message;
import com.dcxm.stu.bean.Student;
import com.dcxm.stu.dao.impl.RegisterDaoImpl;
import com.dcxm.stu.service.RegisterService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class RegisterServiceImpl implements RegisterService {
@Autowired
private RegisterDaoImpl registerDao;
public Message studentRegister(Student student) {
String telphoneNew = student.getTelphone();
System.out.println("new Tel " + telphoneNew);
Message message = new Message();
int row = registerDao.insertInfo(student);
if (row == 1) {
message.setText("注册成功");
message.setFlag("true");
} else {
message.setText("电话号码已经被注册");
message.setFlag("false");
}
return message;
}
}
Message
public class Message {
private String flag;
private String text;
public void setText(String text) {
this.text = text;
}
public String getText() {
return text;
}
public Message() {
}
public Message(String text, String flag) {
this.flag = flag;
this.text = text;
}
@Override
public String toString() {
return text + " " + flag;
}
public void setFlag(String flag) {
this.flag = flag;
}
}
上面是问题代码。
后来我写了一个简单的测试
@RestController
public class StudentInfo {
Student student = new Student();
@RequestMapping("/test")
public Student getStudentInfo(){
student.setUsername("123");
student.setPassword("123");
student.setTelphone("123");
//language=JSON
return student;
}
}
却能正确的返回json
{"username":"123","password":"123","telphone":"123"}