先看效果
写本项目的目的有几点：
- 学习下vue+electron桌面开发
- 学习下java和spring开发(本人一直使用PHP)
- 一直缺少一款能适合自己的TODO LIST软件，能有桌面端的
可直接打包成dmg、exe 等二进制文件使用。
这是我打包后的效果。
技术栈
- vue
- quasar
- electron
- springboot
- mysql
spring技术
- MDC 请求串
- 全局参数校验
- 记录请求参数和返回参数
- 自定义注解拦截登录检测
- JPA 关系映射
部分后端知识
自定义注解
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface LoginRequired {
}
自定义一个loginRequired注解，标注是否需要登录
然后在拦截器里进行全局检测
HandlerMethod handlerMethod = (HandlerMethod) handler;
Method method = handlerMethod.getMethod();
LoginRequired classRequired = method.getDeclaringClass().getAnnotation(LoginRequired.class);
// 判断接口是否需要登录
LoginRequired methodRequired = method.getAnnotation(LoginRequired.class);
if (classRequired == null && methodRequired == null) {
return true;
}
appService.initSession(); //token 方式验证
if (request.getSession().getAttribute(App.SESSION_USER) != null) {
return true;
}
@RestControllerAdvice
利用@RestControllerAdvice注解进行全局控制器异常拦截
/**
* ConstraintViolationException
*/
@ExceptionHandler(MethodArgumentNotValidException.class)
public Response handleConstraintViolationException(MethodArgumentNotValidException ex) {
Map<String, String> errors = new HashMap<>();
ex.getBindingResult().getAllErrors().forEach((error) -> {
String fieldName = ((FieldError) error).getField();
String errorMessage = error.getDefaultMessage();
errors.put(fieldName, errorMessage);
});
return new Response(ResponseRet.parametrErrror, "参数错误", errors);
}
/**
* 违反约束异常 字段不为空等
*
* @param ex
* @return
*/
@ExceptionHandler(ConstraintViolationException.class)
public Response handHibernateException(ConstraintViolationException ex) {
return new Response(ResponseRet.dbExecuteFail, ex.getSQLException().toString());
}
@ExceptionHandler(GenericJDBCException.class)
public Response handGenericJDBCException(GenericJDBCException ex) {
return new Response(ResponseRet.dbExecuteFail, ex.getSQLException().toString());
}
你可以全局处理entity定义的参数约束，或其他异常。
p6spy记录sql和耗时
@Override
public void onAfterExecuteQuery(PreparedStatementInformation statementInformation, long timeElapsedNanos, SQLException e) {
App.sqlCount.set(App.sqlCount.get() + 1);
Long duration = timeElapsedNanos / 1000000;
App.sqlDuration.set(App.sqlDuration.get() + duration);
Log.info(String.format("执行sql || %s 耗时 %s ms", statementInformation.getSqlWithValues(), duration));
}
@Override
public void onAfterExecuteUpdate(PreparedStatementInformation statementInformation, long timeElapsedNanos, int rowCount, SQLException e) {
App.sqlCount.set(App.sqlCount.get() + 1);
Log.info(App.sqlCount.get().toString());
Long duration = timeElapsedNanos / 1000000;
App.sqlDuration.set(App.sqlDuration.get() + duration);
String singleLineSql = statementInformation.getSqlWithValues().replaceAll("\n", "\\\\n");
Log.info(String.format("执行sql || %s 耗时 %s ms", singleLineSql, duration));
}
记录带所有参数的sql和执行耗时
继承DispatcherServlet记录请求参数
protected void doDispatch(HttpServletRequest request, HttpServletResponse response) throws Exception {
ContentCachingRequestWrapper requestWrapper = new ContentCachingRequestWrapper(request);
ContentCachingResponseWrapper responseWrapper = new ContentCachingResponseWrapper(response);
//创建一个 json 对象，用来存放 http 日志信息
ObjectNode rootNode = mapper.createObjectNode();
rootNode.put("uri", requestWrapper.getRequestURI());
rootNode.put("clientIp", requestWrapper.getRemoteAddr());
// rootNode.set("requestHeaders", mapper.valueToTree(getRequestHeaders(requestWrapper)));
String method = requestWrapper.getMethod();
String contentType = requestWrapper.getContentType();
rootNode.put("method", method);
try {
super.doDispatch(requestWrapper, responseWrapper);
} finally {
if (method.equals("GET") || method.equals("DELETE")) {
rootNode.set("request", mapper.valueToTree(requestWrapper.getParameterMap()));
} else if (contentType.equals("application/x-www-form-urlencoded")) {
rootNode.set("request", mapper.valueToTree(requestWrapper.getParameterMap()));
} else {
JsonNode newNode = mapper.readTree(requestWrapper.getContentAsByteArray());
rootNode.set("request", newNode);
}
rootNode.put("status", responseWrapper.getStatus());
JsonNode newNode = mapper.readTree(responseWrapper.getContentAsByteArray());
rootNode.set("response", newNode);
responseWrapper.copyBodyToResponse();
// rootNode.set("responseHeaders", mapper.valueToTree(getResponsetHeaders(responseWrapper)));
Log.info(rootNode.toString());
}
}
