springBoot异常统一处理
采用@ControllerAdvice注解和@ExceptionHandler注解，可以对异常进行统一处理。
1.结构图：
2.pom.xml文件：
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.didispace</groupId> <artifactId>Chapter3-1-6</artifactId> <version>1.0.0</version> <packaging>jar</packaging> <name>Chapter3-1-6</name> <description>Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.3.2.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> </configuration> </plugin> </plugins> </build> </project>
3.配置文件：
server.port=9000
4.index.html
<!DOCTYPE html>
<html xmlns:th="http://www.w3.org/1999/xhtml">
<head lang="en">
<meta charset="UTF-8" />
<title></title>
</head>
<body>
<h1 th:text="${host}">Hello World</h1>
</body>
</html>
5.error.html
<!DOCTYPE html>
<html xmlns:th="http://www.w3.org/1999/xhtml">
<head lang="en">
<meta charset="UTF-8" />
<title>统一异常处理</title>
</head>
<body>
<h1>Error Handler</h1>
<div th:text="${url}"></div>
<div th:text="${exception.message}"></div>
</body>
</html>
6.ErrorInfo
package com.didispace.dto; 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; } }
7.myExecption:
package com.didispace.exception; /** * @author 程序猿DD * @version 1.0.0 * @date 16/5/2 上午10:50. * @blog http://blog.didispace.com */ public class MyException extends Exception { public MyException(String message) { super(message); } }
8.GlobalExceptionHandler:
package com.didispace.exception; 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; } }
9.启动项：
package com.didispace; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * * @author 程序猿DD * @version 1.0.0 * @blog http://blog.didispace.com * */ @SpringBootApplication public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }
10.controller：
package com.didispace.web; import com.didispace.exception.MyException; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; /** * * @author 程序猿DD * @version 1.0.0 * @blog http://blog.didispace.com * */ @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"; } }
