定义返回的数据结构
package com.futao.springmvcdemo.model.system;import org.joda.time.DateTime;import java.sql.Timestamp;public class RestResult {
private boolean success;
private String code;
private Object data;
private Object errorMessage;
private Timestamp currentTime; public RestResult() {
} @Override
public String toString() { return "RestResult{" + "success=" + success + ", code='" + code + ''' + ", data=" + data + ", errorMessage=" + errorMessage + ", currentTime=" + currentTime + '}';
} public RestResult(boolean success, String code, Object data, Object errorMessage) { this.success = success; this.code = code; this.data = data; this.errorMessage = errorMessage; this.currentTime = new Timestamp(new DateTime().getMillis());
} public boolean isSuccess() { return success;
} public void setSuccess(boolean success) { this.success = success;
} public String getCode() { return code;
} public void setCode(String code) { this.code = code;
} public Object getData() { return data;
} public void setData(Object data) { this.data = data;
} public Object getErrorMessage() { return errorMessage;
} public void setErrorMessage(Object errorMessage) { this.errorMessage = errorMessage;
} public Timestamp getCurrentTime() { return currentTime;
} public void setCurrentTime(Timestamp currentTime) { this.currentTime = currentTime;
}
}将返回数据包装成Rest风格
实现ResponseBodyAdvice
package com.futao.springmvcdemo.foundation;import com.alibaba.fastjson.JSONObject;import com.futao.springmvcdemo.model.system.RestResult;import org.apache.commons.lang3.StringUtils;import org.springframework.core.MethodParameter;import org.springframework.http.MediaType;import org.springframework.http.converter.HttpMessageConverter;import org.springframework.http.server.ServerHttpRequest;import org.springframework.http.server.ServerHttpResponse;import org.springframework.web.bind.annotation.ControllerAdvice;import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;@ControllerAdvice(basePackages = "com.futao.springmvcdemo.controller")public class RestResultWrapper implements ResponseBodyAdvice
请求测试
@GetMapping("get") public User get() {
User user = new User();
user.setUsername("NiuBist");
user.setId("123");
user.setAge("18");
user.setEmail("12312@qq.com");
user.setMobile("12312321312");
user.setAddress("浙江省杭州市"); return user;
}结果：
请求结果
二，统一异常处理，返回统一异常数据结构定义一个类来存放所以的异常提示信息，便于管理
package com.futao.springmvcdemo.model.entity.constvar;public final class ErrorMessage { public static final String SYSTEM_EXCEPTION = "系统繁忙，请稍后再试"; public static final String NOT_LOGIN = "01001_您还未登陆或者登陆已超时，请重新登陆"; public static final String MOBILE_ALREADY_REGISTER = "01002_该手机号已经被注册了"; public static final String LOGIC_EXCEPTION = "01003_对不起，你是真的没有我帅";
}定义逻辑异常类
package com.futao.springmvcdemo.foundation;public class LogicException extends RuntimeException {
private String errorMsg;
private String code; public String getErrorMsg() { return errorMsg;
} public void setErrorMsg(String errorMsg) { this.errorMsg = errorMsg;
} public String getCode() { return code;
} public void setCode(String code) { this.code = code;
} private LogicException(String errorMsg) { super(errorMsg); this.code = errorMsg.substring(0, 5); this.errorMsg = errorMsg.substring(6);
}
public static LogicException le(String errorMsg) { return new LogicException(errorMsg);
}
}对异常（包括系统异常与业务逻辑异常）进行统一处理
package com.futao.springmvcdemo.foundation;import com.alibaba.fastjson.JSONObject;import com.futao.springmvcdemo.model.entity.constvar.ErrorMessage;import com.futao.springmvcdemo.model.system.RestResult;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.bind.annotation.ControllerAdvice;import org.springframework.web.bind.annotation.ExceptionHandler;import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;@ControllerAdvicepublic class GlobalExceptionHandler { private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class); @ExceptionHandler(value = Exception.class) @ResponseBody
public Object logicExceptionHandler(HttpServletRequest request, Exception e, HttpServletResponse response) { //系统级异常，错误码固定为-1，提示语固定为系统繁忙，请稍后再试
RestResult result = new RestResult(false, "-1", e.getMessage(), ErrorMessage.SYSTEM_EXCEPTION); //如果是业务逻辑异常，返回具体的错误码与提示信息
if (e instanceof LogicException) {
LogicException logicException = (LogicException) e;
result.setCode(logicException.getCode());
result.setErrorMessage(logicException.getErrorMsg());
} else { //对系统级异常进行日志记录
logger.error("系统异常:" + e.getMessage(), e);
} return JSONObject.toJSON(result);
}
}测试
package com.futao.springmvcdemo.controller;import com.futao.springmvcdemo.foundation.LogicException;import com.futao.springmvcdemo.model.entity.constvar.ErrorMessage;import org.springframework.http.MediaType;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RequestMapping(path = "exception", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)@RestControllerpublic class ExceptionTestController {
@GetMapping(path = "logicException") public void logicException() { throw LogicException.le(ErrorMessage.LOGIC_EXCEPTION);
}
@GetMapping(path = "systemException") public void systemException() { throw new NullPointerException("空指针了，哥门!!!");
}
}逻辑异常
系统级异常
系统级异常
作者：FutaoSmile丶
链接：https://www.jianshu.com/p/9ff254413e9d
