IO异常

1104797209

页面是集成的一个插件，报的这个错误是由于什么导致的呢？
1.数据库的URL已经ping过，正常，端口号也对上，已经写jdbc测试过连接正常。
2.防火墙也都关闭了，以及电脑管家也关闭了。
3.数据库监听也用cmd查了，是启动的。
还能有什么原因导致呢

jishuang

500错误看服务器端的完整的错信息

1104797209

jishuang 发表于 2018-3-16 17:31
500错误看服务器端的完整的错信息

      
三月 16, 2018 5:35:50 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet jsp threw exception
java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
        at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441)
        at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
        at java.sql.DriverManager.getConnection(DriverManager.java:664)
        at java.sql.DriverManager.getConnection(DriverManager.java:247)
        at PluSoft.DBUtil.getConn(DBUtil.java:304)
        at PluSoft.DBUtil.DeleteProject(DBUtil.java:92)
        at PluSoft.DBProject.SaveProjectOnly(DBProject.java:165)
        at PluSoft.DBProject.SaveAll(DBProject.java:67)
        at org.apache.jsp.demo.SaveFile_jsp._jspService(SaveFile_jsp.java:94)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        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:103)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:745)

jishuang

跟踪java代码

1104797209

jishuang 发表于 2018-3-16 17:39
跟踪java代码

1. at PluSoft.DBUtil.getConn(DBUtil.java:304)
conn = java.sql.DriverManager.getConnection(url, user, pwd);
2.  at PluSoft.DBUtil.DeleteProject(DBUtil.java:92)
Connection conn = getConn();
3.at PluSoft.DBProject.SaveProjectOnly(DBProject.java:165)
db.DeleteProject(projectUID);   
4.at PluSoft.DBProject.SaveAll(DBProject.java:67)
String projectUID = SaveProjectOnly(dataProject);

是不是由于表里没有数据导致？

liangyongfei

1104797209 发表于 2018-3-16 17:46
1. at PluSoft.DBUtil.getConn(DBUtil.java:304)
conn = java.sql.DriverManager.getConnection(url, use ...

http://blog.csdn.net/xyw591238/article/details/51583996

百度搜下错误，确定数据库启动了吗  telnet 命令访问端口试试能连上吗？

1104797209

liangyongfei 发表于 2018-3-17 11:34
http://blog.csdn.net/xyw591238/article/details/51583996

百度搜下错误，确定数据库启动了吗  telnet  ...

jdbc连接都显示正常连接，打开页面还是不行

jishuang

后台还报错吗？

1104797209

jishuang 发表于 2018-3-19 10:06
后台还报错吗？

对的

jishuang

报错就java调试看看具体执行什么报错的啊，java是怎么写的不是平台提供的