WW-5455 Defines a new plugin to support Jasper Reports 7

plugins/jasperreports7/README.md

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+# Jasper Reports plugin
+This plugin allows to use Jasper reports as a one of the result types.
+You will find more details in [documentation](https://struts.apache.org/plugins/jasperreports/).
+
+## Installation
+Just drop this plugin JAR into `WEB-INF/lib` folder or add it as a Maven dependency.

plugins/jasperreports7/pom.xml

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+<?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.
+ */
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.struts</groupId>
+        <artifactId>struts2-plugins</artifactId>
+        <version>7.0.0-M11-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>struts2-jasperreports7-plugin</artifactId>
+    <packaging>jar</packaging>
+    <name>Struts 2 Jasper Reports 7 Plugin [EXPERIMENTAL]</name>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <jasperreports7.version>7.0.1</jasperreports7.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>net.sf.jasperreports</groupId>
+            <artifactId>jasperreports</artifactId>
+            <version>${jasperreports7.version}</version>
+            <exclusions>
+                <!-- not necessary to compile and it force dependency convergence issues -->
+                <exclusion>
+                    <groupId>com.fasterxml.jackson.core</groupId>
+                    <artifactId>jackson-databind</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>com.fasterxml.jackson.core</groupId>
+                    <artifactId>jackson-annotations</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>net.sf.jasperreports</groupId>
+            <artifactId>jasperreports-pdf</artifactId>
+            <version>${jasperreports7.version}</version>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.struts</groupId>
+            <artifactId>struts2-junit-plugin</artifactId>
+            <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>
+</project>

plugins/jasperreports7/src/main/java/org/apache/struts2/views/jasperreports7/JasperReportConstants.java

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+/*
+ * 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.jasperreports7;
+
+
+/**
+ * <code>JasperReportConstants</code>
+ */
+public interface JasperReportConstants {
+
+    /**
+     * PDF format constant
+     */
+    String FORMAT_PDF = "PDF";
+
+    /**
+     * XML format constant
+     */
+    String FORMAT_XML = "XML";
+
+    /**
+     * HTML format constant
+     */
+    String FORMAT_HTML = "HTML";
+
+    /**
+     * XLS format constant
+     */
+    String FORMAT_XLSX = "XLSX";
+
+    /**
+     * CSV format constant
+     */
+    String FORMAT_CSV = "CSV";
+
+    /**
+     * RTF format constant
+     */
+    String FORMAT_RTF = "RTF";
+}