如何在Java中读取完整的堆栈跟踪，例如它说“......23更多”

stack-trace java

2022-08-31 14:35:11

我想读取我捕获的异常的完整堆栈跟踪。

例如：

org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.ibm.db2.jcc.DB2Driver'
 at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1136)
 at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
 at com.azurian.lce.usuarios.ConnectionManager.getConnection(ConnectionManager.java:65)
 at com.azurian.lce.usuarios.db2.UsuarioDAOImpl.autenticar(UsuarioDAOImpl.java:101)
 at com.azurian.lce.usuarios.UsuarioServiceImpl.autenticar(UsuarioServiceImpl.java:31)
 at com.azurian.lce.web.admin.actions.LoginAction.execute(LoginAction.java:49)
 at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
 at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
 at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
 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.Http11Processor.process(Http11Processor.java:852)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
 at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: COM.ibm.db2.jcc.DB2Driver
 at java.net.URLClassLoader$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClassInternal(Unknown Source)
 at java.lang.Class.forName0(Native Method)
 at java.lang.Class.forName(Unknown Source)
 at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1130)
 ... 23 more

我想阅读“...23更多“，看看异常来自哪里。

答案 1

BalusC是对的。请参阅此处：http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Throwable.html#printStackTrace（）

特别：

请注意存在包含字符“...”的行。这些行指示此异常的堆栈跟踪的其余部分与此异常（“封闭”异常）引起的异常的堆栈跟踪底部的指示帧数匹配。在捕获“致病异常”的相同方法引发包装异常的常见情况下，此速记可以大大减少输出的长度。

在您的示例中，这意味着：

BasicDataSource.java第 1136 行捕获了第 1130 行上的抛出，并将其重新提取为 .因此，堆栈跟踪的其余部分与上面的 SQLNestedException 匹配，堆栈跟踪以这种更简洁的格式打印。ClassNotFoundExceptionSQLNestedExceptionClassNotFoundException

答案 2

答案很简单，这些行已经在堆栈跟踪:)

 at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
 at com.azurian.lce.usuarios.ConnectionManager.getConnection(ConnectionManager.java:65)
 at com.azurian.lce.usuarios.db2.UsuarioDAOImpl.autenticar(UsuarioDAOImpl.java:101)
 at com.azurian.lce.usuarios.UsuarioServiceImpl.autenticar(UsuarioServiceImpl.java:31)
 at com.azurian.lce.web.admin.actions.LoginAction.execute(LoginAction.java:49)
 at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
 at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
 at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
 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.Http11Processor.process(Http11Processor.java:852)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
 at java.lang.Thread.run(Unknown Source)

基本上，以下内容发生在：BasicDataSource#createDataSource()

try {
    Class.forName(driverClassName); // Line 1130
} catch (ClassNotFoundException e) {
    throw new SQLNestedException(e, "Cannot load JDBC driver class '" + driverClassName + "'"); // Line 1136
}