SSM搭建配置

补充：

• 【SpringMVC学习05】SpringMVC中的参数绑定总结
  https://blog.csdn.net/eson_15/article/details/51718633
• 【SpringMVC学习06】SpringMVC中的数据校验
  https://blog.csdn.net/eson_15/article/details/51725470
• SpringMVC重要注解（一）@ExceptionHandler和@ResponseStatus
  https://blog.csdn.net/lovesomnus/article/details/73188823
• SpringMVC重要注解（二）@ControllerAdvice
  https://blog.csdn.net/w372426096/article/details/78429141
• 借助@RequestParam实现上传文件绑定
  https://blog.csdn.net/lovesomnus/article/details/78850688
• 【SpringMVC学习08】SpringMVC中实现文件上传
  https://blog.csdn.net/eson_15/article/details/51736495

@ResponseBody
	@ExceptionHandler(value = { BindException.class })
	public Ret handleBindValidException(HttpServletRequest request, BindException c) {
		List errors = c.getBindingResult().getAllErrors();
		StringBuffer errorMsg = new StringBuffer();
		for (ObjectError error : errors) {
			errorMsg.append(error.getDefaultMessage()).append(";");
		}
		String errorMsgStr = errorMsg.toString();
		log.warn("参数校验错误，请求url为: {},参数错误详情: {}", request.getRequestURL().toString(), errorMsgStr);
		return Ret.fail401();
	}

	@ExceptionHandler
	@ResponseBody
	public Ret handle(HttpServletRequest request, MethodArgumentNotValidException c) {
		List errors = c.getBindingResult().getAllErrors();
		StringBuffer errorMsg = new StringBuffer();
		for (ObjectError error : errors) {
			errorMsg.append(error.getDefaultMessage()).append(";");
		}
		String errorMsgStr = errorMsg.toString();
		log.warn("参数校验错误，请求url为: {},参数错误详情: {}", request.getRequestURL().toString(), errorMsgStr);
		return Ret.fail401();
	}

	@ResponseBody
	@ExceptionHandler(value = { ConstraintViolationException.class })
	public Ret handleMethodValidException(HttpServletRequest request, ConstraintViolationException c) {
		log.warn("参数校验错误，请求url为: {},参数错误详情: {}", request.getRequestURL().toString(), c.getMessage());
		return Ret.fail401();
	}

	@ResponseBody
	@ExceptionHandler(value = { MissingServletRequestParameterException.class })
	public Ret handleRequestParameterMissValidException(HttpServletRequest request,
			MissingServletRequestParameterException c) {
		log.warn("参数不全错误，请求url为: {},参数错误详情: {}", request.getRequestURL().toString(), c.getMessage());
		return Ret.fail401();
	}

1. web.xml

• 编码过滤

• mvc核心DispatcherServlet
• mvc配置文件位置
• mvc拦截请求

• Druid核心Servlet
• druid请求路径
• druid请求过滤，并排除静态资源

• druid过滤路径

2. db.properties

3. log4j.properties

log4j.rootLogger=INFO,console,dailyFile
#dailyFile,rollingFile,logFile
log4j.additivity.org.apache=true

# 控制台(console)
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.ImmediateFlush=true
log4j.appender.console.Target=System.err
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} [%p] %m%n

# 日志文件(logFile)
log4j.appender.logFile=org.apache.log4j.FileAppender
log4j.appender.logFile.Threshold=INFO
log4j.appender.logFile.ImmediateFlush=true
log4j.appender.logFile.Append=true
log4j.appender.logFile.File=P:/log/log4j.log
log4j.appender.logFile.layout=org.apache.log4j.PatternLayout
log4j.appender.logFile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} [%p] %m%n

# 滚动文件(rollingFile)
log4j.appender.rollingFile=org.apache.log4j.RollingFileAppender
log4j.appender.rollingFile.Threshold=INFO
log4j.appender.rollingFile.ImmediateFlush=true
log4j.appender.rollingFile.Append=true
log4j.appender.rollingFile.File=P:/log/log4j.log
log4j.appender.rollingFile.MaxFileSize=200KB
log4j.appender.rollingFile.MaxBackupIndex=50
log4j.appender.rollingFile.layout=org.apache.log4j.PatternLayout
log4j.appender.rollingFile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} [%p] %m%n

# 定期滚动日志文件(dailyFile)
log4j.appender.dailyFile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.dailyFile.Threshold=INFO
log4j.appender.dailyFile.ImmediateFlush=true
log4j.appender.dailyFile.Append=true
log4j.appender.dailyFile.File=P:/log/log4j.log
log4j.appender.dailyFile.DatePattern='.'yyyy-MM-dd
log4j.appender.dailyFile.layout=org.apache.log4j.PatternLayout
log4j.appender.dailyFile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} [%p] %m%n

4. applicationContext.xml

• 命名空间
• 事务注解扫描
• spring bean自动装配扫描
• 获取db.properties文件内容

• 多druid dataSource配置

• dao层bean自动注入
• dao层接口扫描

• 多数据源sqlSessionFactory配置
• mapper.xml扫描

• 配置多数据源事务管理器、事务管理行为、事务切入点

5. spring-mvc.xml

• mvc命名空间
• 自动注入controller bean
• 静态资源视图解析器

• 视图资源解析
• @RequestMapping RequestMappingHandlerMapping

• 请求返回字符串编码

• JSON转换器编码 MappingJackson2HttpMessageConventer
  

• 上传文件配置
  
  
  

• 借助@RequestParam实现上传文件绑定
  https://blog.csdn.net/lovesomnus/article/details/78850688

6. Mybatis.xml

*7. Mapper.xml

• 一个一对多映射
• 关联查询多list

• 一对多，多的查询语句