代码：
JsonConfig jsonConfig = JsonUtil.configJson("yyyy-MM-dd");
JSONObject jobject = JSONObject.fromObject(pageBean,jsonConfig);这行报错了
common-lang.jar，还有一个common-lang-1.0.1.jar，两者怎么使用啊》我的工程下都有
java.lang.NoSuchMethodError: org.apache.commons.lang.StringUtils.isBlank(Ljava/lang/String;)Z
at net.sf.json.JsonConfig.getMergedExcludes(JsonConfig.java:561)
at net.sf.json.JsonConfig.getMergedExcludes(JsonConfig.java:587)
at net.sf.json.JSONObject._fromBean(JSONObject.java:902)
at net.sf.json.JSONObject.fromObject(JSONObject.java:194)
at ajax.TimeServlet.doPost(TimeServlet.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
at java.lang.Thread.run(Thread.java:595)
jar包版本太低。
使用commons-lang-2.4.jar
删掉一个 试试 可能jar 包冲突了！