SpringBoot--返回值到页面（异常处理）

同上一篇一样，加入了异常处理。

目录结构：

ErrorInfo：

public class ErrorInfo<T> {
    public static final Integer OK = 0;
    public static final Integer ERROR = 100;

    private Integer code;
    private String message;
    private String url;
    private T data;

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public static Integer getOK() {
        return OK;
    }

    public static Integer getERROR() {
        return ERROR;
    }

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
    

}

MyException ：

public class MyException extends Exception {
    /**
* 
*/
private static final long serialVersionUID = 1L;

public MyException(String message) {
        super(message);
    }

}

GlobalExceptionHandler：

import com.didispace.dto.ErrorInfo;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;

@ControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler(value = Exception.class)
    public ModelAndView defaultErrorHandler(HttpServletRequest req, Exception e) throws Exception {
        ModelAndView mav = new ModelAndView();
        mav.addObject("exception", e);
        mav.addObject("url", req.getRequestURL());
        mav.setViewName("error");
        return mav;
    }

    @ExceptionHandler(value = MyException.class)
    @ResponseBody
    public ErrorInfo<String> jsonErrorHandler(HttpServletRequest req, MyException e) throws Exception {
        ErrorInfo<String> r = new ErrorInfo<>();
        r.setMessage(e.getMessage());
        r.setCode(ErrorInfo.ERROR);
        r.setData("Some Data");
        r.setUrl(req.getRequestURL().toString());
        return r;
    }
}

import com.didispace.exception.MyException;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;


/**
 */
@Controller
public class HelloController {

    @RequestMapping("/hello")
    public String hello() throws Exception {
        throw new Exception("发生错误");
    }

    @RequestMapping("/json")
    public String json() throws MyException {
        throw new MyException("发生错误2");
    }

    @RequestMapping("/")
    public String index(ModelMap map) {
        map.addAttribute("host", "http://blog.didispace.com");
        return "index";
    }

}