一，全局异常捕捉处理
新建MyControllerAdvice类，建在包下都有作用：
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.HashMap;
import java.util.Map;
/**
* @Auther: cookie
* @Date: 2018/7/26 15:09
* @Description: 全局捕获异常和自定义全局捕获异常
*/
@ControllerAdvice //不指定包默认加了@Controller和@RestController都能控制
//@ControllerAdvice(basePackages ="com.example.demo.controller")
public class MyControllerAdvice {
/**
* 全局异常处理，反正异常返回统一格式的map
* @param ex
* @return
*/
@ResponseBody
@ExceptionHandler(value = Exception.class)
public Map<String,Object> exceptionHandler(Exception ex){
Map<String,Object> map = new HashMap<String,Object>();
map.put("code",1001);
map.put("mag",ex.getMessage());
//发生异常进行日志记录，写入数据库或者其他处理，此处省略
return map;
}
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
测试：
controller下的方法：
@RequestMapping("/{id}")
public String test(@PathVariable Integer id){
if(true){
id=1/id;
}
return "success";
}
1
2
3
4
5
6
7
结果：
id为0时，1除以0异常。
拦截捕捉自定义异常 MyException.class
我的异常类：
/**
* @Auther: cookie
* @Date: 2018/7/26 15:22
* @Description:
*/
public class MyException extends RuntimeException{
private String code; //异常状态码
private String message; //异常信息
private String method; //发生的方法，位置等
private String descinfo; //描述
public MyException(String code, String message, String method, String descinfo) {
this.code=code;
this.message=message;
this.method=method;
this.descinfo=descinfo;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getMethod() {
return method;
}
public void setMethod(String method) {
this.method = method;
}
public String getDescinfo() {
return descinfo;
}
public void setDescinfo(String descinfo) {
this.descinfo = descinfo;
}
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.HashMap;
import java.util.Map;
/**
* @Auther: cookie
* @Date: 2018/7/26 15:09
* @Description: 全局捕获异常和自定义全局捕获异常
*/
@ControllerAdvice //不指定包默认加了@Controller和@RestController都能控制
//@ControllerAdvice(basePackages ="com.example.demo.controller")
public class MyControllerAdvice {
/**
* 拦截捕捉自定义异常 MyException.class
* @param myex
* @return
*/
@ResponseBody
@ExceptionHandler(value = MyException.class)
public Map<String,Object> myExceptionHandler(MyException myex){
Map<String,Object> map = new HashMap<String,Object>();
map.put("code",myex.getCode());
map.put("message",myex.getMessage());
map.put("method",myex.getMethod());
map.put("descinfo",myex.getDescinfo());
//发生异常进行日志记录，写入数据库或者其他处理，此处省略
return map;
}
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
测试：
@RequestMapping(value = "/")
public String index() throws Exception{
String name = redisUtil.set("key100", "666");
if(StringUtils.isEmpty(name)){
throw new MyException("1001","empty","/API/getUserName","在获取用户名字的时候为空");
}
return name;
}
1
2
3
4
5
6
7
8
结果：