视图导出报错500

点击视图导出按钮是报错，服务器错误500
tomcat错误信息如下：

在线程异常“http-bio-8080-exec-440”
lang.outofmemoryerror：java堆空间
在线程异常“http-bio-8080-exec-474”
AP的空间
java.lang.outofmemoryerror：java堆空间

您好，您的问题是Tomcat内存不足，您参考http://www.teemlink.com/bbs/foru ... hlight=%C4%DA%B4%E6

现在导出不报500了，直接白屏

Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server

通信链路故障
成功发送到服务器的最后一个包是0毫秒以前的。司机没有从服务器收到的数据包

您好，根据您提供的最新的错误信息是数据库连接不上了或者数据库没有连接数了。麻烦您确认下您的数据库是否能正常访问。

org.mozilla.javascript.WrappedException: Wrapped com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. (baselib#1866)
at org.mozilla.javascript.Context.throwAsScriptRuntimeEx(Unknown Source)
at org.mozilla.javascript.MemberBox.invoke(Unknown Source)
at org.mozilla.javascript.NativeJavaMethod.call(Unknown Source)
at org.mozilla.javascript.optimizer.OptRuntime.callN(Unknown Source)
at org.mozilla.javascript.gen.c1._c113(baselib:1866)
at org.mozilla.javascript.gen.c1.call(baselib)
at org.mozilla.javascript.optimizer.OptRuntime.callName(Unknown Source)
at org.mozilla.javascript.gen.c53._c0(Form.商机管理.Field(11e6-eeae-6661bbb2-b51b-bd817b08efc9).ghfs.OptionsScript:2)
at org.mozilla.javascript.gen.c53.call(Form.商机管理.Field(11e6-eeae-6661bbb2-b51b-bd817b08efc9).ghfs.OptionsScript)
at org.mozilla.javascript.ContextFactory.doTopCall(Unknown Source)
at org.mozilla.javascript.ScriptRuntime.doTopCall(Unknown Source)
at org.mozilla.javascript.gen.c53.call(Form.商机管理.Field(11e6-eeae-6661bbb2-b51b-bd817b08efc9).ghfs.OptionsScript)
at org.mozilla.javascript.gen.c53.exec(Form.商机管理.Field(11e6-eeae-6661bbb2-b51b-bd817b08efc9).ghfs.OptionsScript)
at cn.myapps.core.macro.runner.JavaScriptRunner.run(JavaScriptRunner.java:135)
at cn.myapps.core.dynaform.form.ejb.SelectField.getOptions(SelectField.java:378)
at cn.myapps.core.dynaform.form.ejb.SelectField.getText(SelectField.java:705)
at cn.myapps.core.dynaform.form.ejb.SelectField.getText(SelectField.java:684)
at cn.myapps.core.dynaform.view.ejb.Column.getValue(Column.java:886)
at cn.myapps.core.dynaform.view.ejb.Column.getTextString(Column.java:839)
at cn.myapps.core.dynaform.view.ejb.ExcelFileBuilder.convertToExcelData(ExcelFileBuilder.java:235)
at cn.myapps.core.dynaform.view.ejb.ExcelFileBuilder.buildSheet(ExcelFileBuilder.java:105)
at cn.myapps.core.dynaform.view.ejb.ExcelFileBuilder.buildSheet(ExcelFileBuilder.java:171)
at cn.myapps.core.dynaform.view.ejb.ViewProcessBean.expDocToExcel(ViewProcessBean.java:122)
at cn.myapps.core.dynaform.view.ejb.ViewProcessBean$$EnhancerByCGLIB$$71f86d19.CGLIB$expDocToExcel$3()
at cn.myapps.core.dynaform.view.ejb.ViewProcessBean$$EnhancerByCGLIB$$71f86d19$$FastClassByCGLIB$$5f4fc308.invoke()
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167)
at cn.myapps.protection.util.WarpProcessFactory.intercept(WarpProcessFactory.java:321)
at cn.myapps.core.dynaform.view.ejb.ViewProcessBean$$EnhancerByCGLIB$$71f86d19.expDocToExcel()
at cn.myapps.core.dynaform.activity.ejb.type.ExportToExcel.doProcess(ExportToExcel.java:108)
at cn.myapps.core.dynaform.activity.ejb.Activity.process(Activity.java:1434)
at cn.myapps.core.dynaform.activity.action.ActivityAction.doProcess(ActivityAction.java:316)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:892)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1294)
at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)
at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)
at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)
at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1370)
at ognl.ASTMethod.getValueBody(ASTMethod.java:91)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
at ognl.SimpleNode.getValue(SimpleNode.java:258)
at ognl.Ognl.getValue(Ognl.java:467)
at ognl.Ognl.getValue(Ognl.java:431)
at com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:352)
at com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:404)
at com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:350)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251)
at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
at

var sql="select item_ghfs from tlk_供货方式";
var q=queryByDSName("sj",sql);
var zhi="";
if(q!=null){
    for(var a=q.iterator();a.hasNext();){
        var b=a.next();
        zhi=zhi+";"+b.get("item_ghfs");  


    }
}zhi

s数据源没有问题

您好，从 org.mozilla.javascript.WrappedException: Wrapped com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
可以看出您的数据库没有连接成功

您好，您联系下我。我具体给您远程看下。具体我的联系方式见签名。