动态修改log4j的日志级别,不重启服务器
2017-07-18 18:38
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通过条用log4j的api,动态修改log4j的日志级别,不用重启服务器,代码如下:
另外:动态修改log4j的日志,还可以用spring提供的log4jConfigLocation
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | import java.io.Writer; import java.util.Enumeration; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Level; import org.apache.log4j.LogManager; import org.apache.log4j.Logger; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; /** * 动态修改log4j日志级别 * * @author tanlk * @date 2017年7月18日下午5:43:27 */ @Controller public class LoggerController { /** * * @param p 需要修改的包名 * @param l 日志级别 * @return */ @ResponseBody @RequestMapping(value = "/logger/change" , method = RequestMethod.GET, produces = "application/json" ) public String change(String p, String l) { try { Level level = Level.toLevel(l); Logger logger = LogManager.getLogger(p); logger.setLevel(level); } catch (Exception e) { return "失败" ; } return "成功" ; } /** * 修改全局日志级别,但是我测试的时候只修改了第三方jar的日志级别,我的项目包的日志级别没有修改成功 * @param l * @return */ @ResponseBody @RequestMapping(value = "/logger/changeRoot" , method = RequestMethod.GET, produces = "application/json" ) public String change(String l) { try { Level level = Level.toLevel(l); LogManager.getRootLogger().setLevel(level); } catch (Exception e) { return "失败" ; } return "成功" ; } /** * 查看现在包的日志级别 * @return */ @RequestMapping(value = "/loggers" , method = RequestMethod.GET) public void index(HttpServletRequest request, HttpServletResponse response) { StringBuilder sb = new StringBuilder(); try { sb.append( "<html>" ); Writer writer = response.getWriter(); response.setCharacterEncoding( "UTF-8" ); response.setContentType( "text/html; charset=utf-8" ); Enumeration logs = LogManager.getCurrentLoggers(); while (logs.hasMoreElements()) { Logger logger = (Logger) logs.nextElement(); sb.append( "<span style='display:block;'>" ); sb.append(logger.getName()).append( "," ).append(logger.getEffectiveLevel()); sb.append( "</span>" ); } sb.append( "</html>" ); writer.write(sb.toString()); writer.flush(); if (writer != null ){ writer.close(); } System.out.println(sb.toString()); } catch (Exception e) { } } } |
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