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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (WW-4923) JasperReportResult: NPE When Not Using SQL Connection
Date Wed, 28 Feb 2018 09:17:00 GMT

    [ https://issues.apache.org/jira/browse/WW-4923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16380011#comment-16380011
] 

ASF GitHub Bot commented on WW-4923:
------------------------------------

lukaszlenart closed pull request #212: WW-4923 Null check to avoid NPE when not passing a
JDBC connection
URL: https://github.com/apache/struts/pull/212
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git a/plugins/jasperreports/pom.xml b/plugins/jasperreports/pom.xml
index e42ffa707..00b651db1 100644
--- a/plugins/jasperreports/pom.xml
+++ b/plugins/jasperreports/pom.xml
@@ -49,6 +49,32 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>org.apache.struts</groupId>
+            <artifactId>struts2-junit-plugin</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>jsp-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>3.1.0</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.easymock</groupId>
+            <artifactId>easymock</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
     <properties>
     	<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
diff --git a/plugins/jasperreports/src/main/java/org/apache/struts2/views/jasperreports/JasperReportsResult.java
b/plugins/jasperreports/src/main/java/org/apache/struts2/views/jasperreports/JasperReportsResult.java
index 242469024..c79e1b6c7 100644
--- a/plugins/jasperreports/src/main/java/org/apache/struts2/views/jasperreports/JasperReportsResult.java
+++ b/plugins/jasperreports/src/main/java/org/apache/struts2/views/jasperreports/JasperReportsResult.java
@@ -384,7 +384,10 @@ protected void doExecute(String finalLocation, ActionInvocation invocation)
thro
             throw new ServletException(e.getMessage(), e);
         } finally {
             try {
-                conn.close();
+                if (conn != null) {
+                    // avoid NPE if connection was not used for the report
+                    conn.close();
+                }
             } catch (Exception e) {
                 LOG.warn("Could not close db connection properly", e);
             }
diff --git a/plugins/jasperreports/src/test/java/org/apache/struts2/views/jasperreports/JasperReportsResultTest.java
b/plugins/jasperreports/src/test/java/org/apache/struts2/views/jasperreports/JasperReportsResultTest.java
new file mode 100644
index 000000000..1bf55acf8
--- /dev/null
+++ b/plugins/jasperreports/src/test/java/org/apache/struts2/views/jasperreports/JasperReportsResultTest.java
@@ -0,0 +1,89 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.struts2.views.jasperreports;
+
+import com.opensymphony.xwork2.ActionContext;
+import com.opensymphony.xwork2.mock.MockActionInvocation;
+import com.opensymphony.xwork2.util.ClassLoaderUtil;
+import com.opensymphony.xwork2.util.ValueStack;
+import net.sf.jasperreports.engine.JasperCompileManager;
+import org.apache.struts2.StrutsStatics;
+import org.apache.struts2.StrutsTestCase;
+import org.easymock.IAnswer;
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.mock.web.MockHttpServletResponse;
+import org.springframework.mock.web.MockServletContext;
+
+import java.net.URL;
+import java.sql.Connection;
+
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.expectLastCall;
+import static org.easymock.EasyMock.replay;
+import static org.easymock.EasyMock.verify;
+
+public class JasperReportsResultTest extends StrutsTestCase {
+    private MockActionInvocation invocation;
+    private ValueStack stack;
+
+    public void testConnClose() throws Exception {
+        JasperReportsResult result = new JasperReportsResult();
+        URL url = ClassLoaderUtil.getResource("org/apache/struts2/views/jasperreports/empty.jrxml",
this.getClass());
+        JasperCompileManager.compileReportToFile(url.getFile(), url.getFile() + ".jasper");
+        result.setLocation("org/apache/struts2/views/jasperreports/empty.jrxml.jasper");
+        result.setFormat(JasperReportConstants.FORMAT_XML);
+
+        Connection connection = createMock(Connection.class);
+        final Boolean[] closed = {false};
+        connection.close();
+        expectLastCall().andAnswer(new IAnswer() {
+            @Override
+            public Object answer() throws Throwable {
+                closed[0] = true;
+                return null;
+            }
+        });
+        replay(connection);
+
+        stack.push(connection);
+        result.setConnection("top");
+
+        assertFalse(closed[0]);
+        result.execute(this.invocation);
+        verify(connection);
+        assertTrue(closed[0]);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        MockHttpServletResponse response = new MockHttpServletResponse();
+        MockHttpServletRequest request = new MockHttpServletRequest();
+        request.setRequestURI("http://sumeruri");
+        ActionContext context = ActionContext.getContext();
+        context.put(StrutsStatics.HTTP_RESPONSE, response);
+        context.put(StrutsStatics.HTTP_REQUEST, request);
+        this.stack = context.getValueStack();
+        MockServletContext servletContext = new MockServletContext();
+        context.put(StrutsStatics.SERVLET_CONTEXT, servletContext);
+        this.invocation = new MockActionInvocation();
+        this.invocation.setInvocationContext(context);
+        this.invocation.setStack(this.stack);
+    }
+}
diff --git a/plugins/jasperreports/src/test/resources/org/apache/struts2/views/jasperreports/empty.jrxml
b/plugins/jasperreports/src/test/resources/org/apache/struts2/views/jasperreports/empty.jrxml
new file mode 100644
index 000000000..816d8609f
--- /dev/null
+++ b/plugins/jasperreports/src/test/resources/org/apache/struts2/views/jasperreports/empty.jrxml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+-->
+<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd"
name="test" pageWidth="842" pageHeight="595" orientation="Landscape" columnWidth="802" leftMargin="20"
rightMargin="20" topMargin="20" bottomMargin="20" uuid="e65f69ca-7c62-4b4b-abc6-2e1a8710f23e">
+</jasperReport>
\ No newline at end of file


 

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> JasperReportResult: NPE When Not Using SQL Connection
> -----------------------------------------------------
>
>                 Key: WW-4923
>                 URL: https://issues.apache.org/jira/browse/WW-4923
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Plugin - JasperReports
>    Affects Versions: 2.5.14.1
>            Reporter: Paul Zepernick
>            Priority: Minor
>             Fix For: 2.5.16
>
>
> The JasperReportResult throws a NPE in the finally when closing the SQL connection when
using a Data Source from the value stack instead of supplying a SQL connection to the report.



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