ssm中全局异常处理

 

先导入依赖,slf4j是一个通用的平台,就是如果以后不使用log4j了改成别的日志文件了直接换jar包就可以了,它是同用的接口 

<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.6.1</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.6.4</version>
    <scope>test</scope>
</dependency>

<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.16</version>
</dependency>

然后创建log4j.properties必须叫这个名字,放到resources下面

log4j.rootLogger=INFO,A3,STDOUT

log4j.appender.STDOUT=org.apache.log4j.ConsoleAppender
log4j.appender.STDOUT.layout=org.apache.log4j.PatternLayout
log4j.appender.STDOUT.layout.ConversionPattern=[%p] [%l] %10.10c - %m%n

log4j.appender.A3=org.apache.log4j.RollingFileAppender
log4j.appender.A3.file=logs/server.log
log4j.appender.A3.MaxFileSize=1024KB
log4j.appender.A3.MaxBackupIndex=10
log4j.appender.A3.layout=org.apache.log4j.PatternLayout
log4j.appender.A3.layout.ConversionPattern=\n\n[%-5p] %d{yyyy-MM-dd HH\:mm\:ss,SSS} method\:%l%n%m%n

编写全局异常处理类,写到表现层

package cn.e3mall.search.exception;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;

/**
 * 全局异常处理器
 * <p>Title: GlobalExceptionResolver</p>
 * <p>Description: </p>
 * <p>Company: www.itcast.cn</p> 
 * @version 1.0
 */
public class GlobalExceptionResolver implements HandlerExceptionResolver {
	
	private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionResolver.class); 

	@Override
	public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,
			Exception ex) {
		//打印控制台
		ex.printStackTrace();
		//写日志
		logger.debug("测试输出的日志。。。。。。。");
		logger.info("系统发生异常了。。。。。。。");
		logger.error("系统发生异常", ex);
		//发邮件、发短信
		//使用jmail工具包。发短信使用第三方的Webservice。
		//显示错误页面
		ModelAndView modelAndView = new ModelAndView();
		modelAndView.setViewName("error/exception");
		return modelAndView;
	}

}

在springmvc配置文件中配置这个异常类

<!-- 全局异常处理器 -->
    <bean class="cn.e3mall.search.exception.GlobalExceptionResolver"/>

然后项目中出错的话就会在这生成错误信息