个回答

• HansonQ

  2015-11-26 14:03:15

  已采纳

  这里面不好说，反正就是在 访问数据库的那一层中输出 你从前台带进来的查询条件（为什么输出的原因是因为我担心参数可能就丢失了，带入数据库里面当然就是查不出结果的）要是有输出，就看sql（需要校验sql能否成功执行）语句执行，返回的结果有没有，如果要就是页面展示以及servlet中可能没处理好导致页面取不到数据

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• 着你追

  2015-12-26 19:59:27

  居然我也是同样的问题

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• 九儿七七

  2015-12-02 09:11:18

  2015-12-2 9:09:28 org.apache.catalina.core.AprLifecycleListener init
  信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: E:\MyEclipse 8.5\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;D:\Tomcat 6.0\bin
  2015-12-2 9:09:28 org.apache.coyote.http11.Http11Protocol init
  信息: Initializing Coyote HTTP/1.1 on http-8080
  2015-12-2 9:09:28 org.apache.catalina.startup.Catalina load
  信息: Initialization processed in 443 ms
  2015-12-2 9:09:28 org.apache.catalina.core.StandardService start
  信息: Starting service Catalina
  2015-12-2 9:09:28 org.apache.catalina.core.StandardEngine start
  信息: Starting Servlet Engine: Apache Tomcat/6.0.18
  log4j:WARN No appenders could be found for logger (com.opensymphony.xwork2.config.providers.XmlConfigurationProvider).
  log4j:WARN Please initialize the log4j system properly.
  2015-12-2 9:09:33 com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
  信息: Parsing configuration file [struts-default.xml]
  2015-12-2 9:09:33 com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
  信息: Parsing configuration file [struts-plugin.xml]
  2015-12-2 9:09:33 com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
  信息: Parsing configuration file [struts.xml]
  log4j:WARN No appenders could be found for logger (freemarker.cache).
  log4j:WARN Please initialize the log4j system properly.
  2015-12-2 9:09:37 org.apache.coyote.http11.Http11Protocol start
  信息: Starting Coyote HTTP/1.1 on http-8080
  2015-12-2 9:09:37 org.apache.jk.common.ChannelSocket init
  信息: JK: ajp13 listening on /0.0.0.0:8009
  2015-12-2 9:09:37 org.apache.jk.server.JkMain start
  信息: Jk running ID=0 time=0/47  config=null
  2015-12-2 9:09:37 org.apache.catalina.startup.Catalina start
  信息: Server startup in 8641 ms

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• HansonQ

  2015-12-01 22:04:31

  查询的时候控制台输出什么？你贴出来 我看下
  

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• 九儿七七

  2015-11-26 16:44:50

  2015-11-26 16:41:53 org.apache.catalina.core.AprLifecycleListener init
  信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: E:\MyEclipse 8.5\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;D:\Tomcat 6.0\bin
  2015-11-26 16:41:53 org.apache.coyote.http11.Http11Protocol init
  信息: Initializing Coyote HTTP/1.1 on http-8080
  2015-11-26 16:41:53 org.apache.catalina.startup.Catalina load
  信息: Initialization processed in 663 ms
  2015-11-26 16:41:53 org.apache.catalina.core.StandardService start
  信息: Starting service Catalina
  2015-11-26 16:41:53 org.apache.catalina.core.StandardEngine start
  信息: Starting Servlet Engine: Apache Tomcat/6.0.18
  log4j:WARN No appenders could be found for logger (com.opensymphony.xwork2.config.providers.XmlConfigurationProvider).
  log4j:WARN Please initialize the log4j system properly.
  2015-11-26 16:41:59 com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
  信息: Parsing configuration file [struts-default.xml]
  2015-11-26 16:41:59 com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
  信息: Parsing configuration file [struts-plugin.xml]
  2015-11-26 16:41:59 com.opensymphony.xwork2.util.logging.commons.CommonsLogger info
  信息: Parsing configuration file [struts.xml]
  log4j:WARN No appenders could be found for logger (freemarker.cache).
  log4j:WARN Please initialize the log4j system properly.
  2015-11-26 16:42:05 org.apache.coyote.http11.Http11Protocol start
  信息: Starting Coyote HTTP/1.1 on http-8080
  2015-11-26 16:42:05 org.apache.jk.common.ChannelSocket init
  信息: JK: ajp13 listening on /0.0.0.0:8009
  2015-11-26 16:42:05 org.apache.jk.server.JkMain start
  信息: Jk running ID=0 time=0/60  config=null
  2015-11-26 16:42:05 org.apache.catalina.startup.Catalina start
  信息: Server startup in 12044 ms
  Hibernate:
      select
          users0_.uid as uid1_1_,
          users0_.username as username2_1_,
          users0_.password as password3_1_
      from
          hello_users users0_
      where
          users0_.username=?
          and users0_.password=?
  
  

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• 请叫我百度

  2015-11-26 15:25:40

  有可能是你的查询界面的表单代码name属性值去javaBean中封装的值不一致，或者说你的查询方法的sql语句不正确，又或者数据库名字写错了吧。

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• HansonQ

  2015-11-26 13:39:16

  也可以在持久层做一个输出输出  查询条件以及结果看控制台输出

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