springmvc 異常

<!-- 攔截器的異常 -->
   <bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">  
     <property name="exceptionMappings">  
       <props>  
         <prop key="com.excloud.platform.web.controller.SessionTimeoutException">redirect:/timeout.jsp</prop>  
       </props>  
     </property>  
   </bean>

參考： https://www.cnblogs.com/libra0920/p/6289848.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
alert("用戶登錄超時，請重新登錄！");
top.location="index.jsp";
</script>
</head>
</html>

<bean id="exceptionResolver" class="com.suning.fucdn.config.DefaultHandlerExceptionResolver">
        <property name="order">
            <value>-1</value>
        </property>
    </bean>

package com.**.**.config;

import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import com.**.**.entity.ApiResult;
import com.**.**.entity.enums.Msg;
import com.**.**.exception.RunningException;
import com.**.**.exception.ValidationException;
import com.**.**.util.ApiUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.converter.HttpMessageConversionException;
import org.springframework.validation.BindException;
import org.springframework.web.HttpMediaTypeNotAcceptableException;
import org.springframework.web.HttpMediaTypeNotSupportedException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MissingServletRequestParameterException;
import org.springframework.web.bind.ServletRequestBindingException;
import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.NoHandlerFoundException;
import org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver;
import org.springframework.web.servlet.mvc.multiaction.NoSuchRequestHandlingMethodException;

@Slf4j
public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionResolver {

    @Override
    protected ModelAndView doResolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
        try {
            log.info("進入異常處理類DefaultHandlerExceptionResolver ： " + ex);
            // 404 No mapping found
            // 其實spring已經在攔截器DispatcherServlet裏處理了，可能是認爲404錯誤沒必要做處理消耗性能，需要重寫其noHandlerFound方法。
            if (ex instanceof NoSuchRequestHandlingMethodException || ex instanceof NoHandlerFoundException) {
                return this.renderException(Msg.PARAMETERERROR, request, response);
                // 405 Method Not Allowed
            } else if (ex instanceof HttpRequestMethodNotSupportedException) {
                return this.renderException(Msg.REQUESTTYPEERROR, request, response);
                // 415 Content type not supported
            } else if (ex instanceof HttpMediaTypeNotSupportedException) {
                return this.renderException(Msg.PARAMETERERROR, request, response);
                // 406 Could not find acceptable representation
            } else if (ex instanceof HttpMediaTypeNotAcceptableException) {
                return this.renderException(Msg.PARAMETERERROR, request, response);
                // 400 Required parameter is not present
            } else if (ex instanceof MissingServletRequestParameterException) {
                return this.renderException(Msg.PARAMETERERROR, request, response);
                // 400沒有json數據 Could not read JSON: No content to map due to
                // end-of-input
            } else if (ex instanceof HttpMessageConversionException) {
                return this.renderException(Msg.PARAMETERERROR, request, response);
                // 400 Required parameter is not present
            } else if (ex instanceof ServletRequestBindingException) {
                return this.renderException(Msg.PARAMETERERROR, request, response);
            }else if (ex instanceof MethodArgumentTypeMismatchException) {
                return renderException(Msg.PARAMETERERROR, request, response);
            } else if (ex instanceof BindException) {
                return renderException(Msg.PARAMETERERROR, request, response);
            } else {
                if (ex instanceof ConstraintViolationException) {
                    ConstraintViolationException ce = (ConstraintViolationException) ex;
                    for (ConstraintViolation<?> violation : ce.getConstraintViolations()) {
                        Map<String, Object> attrs = violation.getConstraintDescriptor().getAttributes();
                        return this.renderException((Msg) (attrs.get("msg")), request, response);
                    }
                    // 自定義異常
                } else if (ex instanceof ValidationException) {
                    ValidationException ve = (ValidationException) ex;
                    return this.renderException(ve.getMsg(), request, response);
                } else if (ex instanceof RunningException) {
                    RunningException rex = (RunningException) ex;
                    return renderException(rex.getMsg(), request, response); // 系統異常
                } else {
                    return this.renderException(Msg.CODEEXCEPTION, request, response);
                }
            }
        } catch (Exception handlerException) {
            log.error("", handlerException);
        }
        return new ModelAndView();
    }

    private ModelAndView renderException(Msg msg, HttpServletRequest request, HttpServletResponse response) {
        ApiResult resultModel = ApiUtil.createResult(msg);
        ApiUtil.setResponse(response, resultModel);
        return new ModelAndView();
    }

}

單元測試：

package com.**.**.config;

import com.**.**.entity.enums.Msg;
import com.**.**.exception.RunningException;
import com.**.**.exception.ValidationException;
import org.junit.Test;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConversionException;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.validation.BindException;
import org.springframework.web.HttpMediaTypeNotAcceptableException;
import org.springframework.web.HttpMediaTypeNotSupportedException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MissingServletRequestParameterException;
import org.springframework.web.bind.ServletRequestBindingException;
import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
import org.springframework.web.servlet.NoHandlerFoundException;
import org.springframework.web.servlet.mvc.multiaction.NoSuchRequestHandlingMethodException;
import javax.validation.ConstraintViolationException;
import java.util.ArrayList;
import java.util.List;

public class DefaultHandlerExceptionResolverTest {

    @Test
    public void doResolveException(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new NoSuchRequestHandlingMethodException(httpServletRequest));
    }

    @Test
    public void doResolveException1(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new NoHandlerFoundException(null, null, null));
    }

    @Test
    public void doResolveException2(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new HttpRequestMethodNotSupportedException(null, null, null));
    }

@Test
    public void doResolveException3(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        List<MediaType> supportedMediaTypes = new ArrayList<>();
        supportedMediaTypes.add(MediaType.APPLICATION_JSON);
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new HttpMediaTypeNotSupportedException(MediaType.APPLICATION_JSON_UTF8, supportedMediaTypes, Msg.CODEEXCEPTION.getValue()));
    }

    @Test
    public void doResolveException4(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new HttpMediaTypeNotAcceptableException("test"));
    }

    @Test
    public void doResolveException5(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new MissingServletRequestParameterException("test", "test"));
    }
@Test
    public void doResolveException6(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new HttpMessageConversionException("test", null));
    }

    @Test
    public void doResolveException7(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new HttpMessageConversionException("test", null));
    }

    @Test
    public void doResolveException8(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new ServletRequestBindingException("test", null));
    }
@Test
    public void doResolveException9(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new MethodArgumentTypeMismatchException(null,null,null,null, null));
    }

    @Test
    public void doResolveException10(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new BindException(Msg.CODEEXCEPTION,null));
    }

    @Test
    public void doResolveException11(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new ConstraintViolationException(Msg.CODEEXCEPTION.getValue(),null));
    }
@Test
    public void doResolveException12(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new ValidationException(Msg.PARAMETERERROR));
    }

    @Test
    public void doResolveException13(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new RunningException(Msg.CODEEXCEPTION));
    }

    @Test
    public void doResolveException14(){
        DefaultHandlerExceptionResolver defaultHandlerExceptionResolver = new DefaultHandlerExceptionResolver();
        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        MockHttpServletResponse httpServletResponse = new MockHttpServletResponse();
        defaultHandlerExceptionResolver.doResolveException(httpServletRequest, httpServletResponse, null, new IllegalAccessException(Msg.CODEEXCEPTION.getValue()));
    }
}

枚舉

public enum Msg {
    SUCCESS(0, "success"),
    CODEEXCEPTION(1, "代碼異常"),
    PARAMETERERROR(2, "參數錯誤"),
    NODOMAINDATA(4, "域名列表中沒有查詢到相關數據"),
    REQUESTTYPEERROR(3, "請求方式錯誤");

    private Msg(Integer code, String value){
        this.code = code;
        this.value = value;
    }
    private int code;
    private String value;

    public int getCode() {
        return code;
    }

    public String getValue() {
        return value;
    }
}

public class RunningException extends RuntimeException {

    private static final long serialVersionUID = -7590728488536681021L;
    /**
     * 錯誤碼
     */
    private final Msg msg;

    /**
     * RunningException有參構造方法
     * @param msg
     */
    public RunningException(Msg msg){
        this.msg = msg;
    }

    /**
     * 獲取錯誤碼信息
     * @return
     */
    public Msg getMsg() {
        return msg;
    }
}

public class ApiResult {

    // 錯誤碼
    private int err;
    // 信息
    private String msg;
    // 數據
    private Object data;

    /**
     * 設置Msg
     * @param msg
     */
    public ApiResult(Msg msg) {
        setMsg(msg);
    }

    /**
     * 設置Msg
     * @param msg
     * @param result
     */
    public ApiResult(Msg msg, Object result) {
        setMsg(msg);
        this.data = result;
    }

    /**
     * 設置Msg
     * @param msg
     */
    public void setMsg(Msg msg) {
        this.err = msg.getCode();
        this.msg = msg.getValue();
    }


    public int getErr() {
        return err;
    }

    public void setErr(int err) {
        this.err = err;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Object getData() {
        return data;
    }

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

@Slf4j
public class ApiUtil {
    private ApiUtil() {}

    public static ApiResult createSuccessResult() {
        return createResult(Msg.SUCCESS);
    }

    public static ApiResult createSuccessResult(Object data) {
        return createResult(Msg.SUCCESS, data);
    }

    public static ApiResult createResult(Msg msg) {
        return new ApiResult(msg);
    }

    public static ApiResult createResult(Msg msg, Object data) {
        return new ApiResult(msg, data);
    }

    public static void setResponse(HttpServletResponse httpServletResponse, Object obj) {
        String text = JSONUtil.castObjToStr(obj);
        OutputStream outputStream = null;
        try {
            outputStream = httpServletResponse.getOutputStream();
            outputStream.write(text.getBytes("UTF-8"));
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        }
        httpServletResponse.setStatus(200);
        httpServletResponse.setHeader("content-type", MediaType.APPLICATION_JSON_UTF8_VALUE);
    }
}

溫顧

redis setnx

git 回退

緩存工具

linux 部署war包

https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

linux以太網驅動總結