struts2与JFreeChart、JasperReport整合

1.struts2与jfreechart结合


（1），查看帮助文档即可以知道如何配置。首先把struts2文件夹下的lib中的
struts2-jfreechart-plugin-2.1.8.1.jar包加入到项目下，注意此时的struts2-jfreechart-
plugin-2.1.8.1.jar中的struts-plugin.xml文件中应该为：

<struts>

<package name="jfreechart-default

"
extends="struts-default
">

<result-types>

<result-type name="chart"
class="org.apache.struts2.dispatcher.ChartResult">

<param name="height">150</param>

<param name="width">200</param>

</result-type>

</result-types>

</package>

</struts>

(2).在struts.xml文件中，配置如下类似的信息：

<package name="default" namespace="/"
extends="jfreechart-default

">//
从
jfreechart-default继承

<action name="select"
class="com.biped.struts.action.SelectAction">

<result name="success" type="chart">

<param name="height">400</param>

<param name="width">600</param>

</result>

</action>

</package>

（3）在action中写上类似的内容，如：

package com.biped.struts.action;

import java.awt.Font;

import java.util.List;

import java.util.Map;

import org.jfree.chart.ChartFactory;

import org.jfree.chart.JFreeChart;

import org.jfree.chart.axis.CategoryAxis;

import org.jfree.chart.axis.CategoryLabelPositions;

import org.jfree.chart.axis.ValueAxis;

import org.jfree.chart.plot.CategoryPlot;

import org.jfree.chart.plot.PlotOrientation;

import org.jfree.chart.title.TextTitle;

import org.jfree.data.category.CategoryDataset;

import org.jfree.data.category.DefaultCategoryDataset;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

@SuppressWarnings("serial")

public class SelectAction extends ActionSupport{

private JFreeChart
chart;//必须提供该属性，提供getter方法，且名字要为chart

private List<String>
interest;//这是接收用户选择的项目

public JFreeChart
getChart() {//需要自己产生JFreeChart对象

JFreeChart chart = ChartFactory.createBarChart3D("爱好兴趣调查",
"项目","比例", createDataset(), PlotOrientation.VERTICAL, true, true,true);

TextTitle tt = chart.getTitle();

tt.setFont(new Font("黑体",Font.BOLD,20));

chart.getLegend().setItemFont(new Font("宋体",Font.ITALIC,10));

CategoryPlot plot = chart.getCategoryPlot();

CategoryAxis domainAxis = plot.getDomainAxis();

domainAxis.setLabelFont(new Font("宋体",Font.ITALIC,14));

domainAxis.setTickLabelFont(new Font("宋体",Font.ITALIC,14));

domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);

ValueAxis valueAxis = plot.getRangeAxis();

valueAxis.setLabelFont(new Font("宋体",Font.ITALIC,14));

valueAxis.setTickLabelFont(new Font("宋体",Font.ITALIC,14));

return chart;

}

public List<String> getInterest() {

return interest;

}

public void setChart(JFreeChart chart) {

this.chart = chart;

}

public void setInterest(List<String>
interest) {

this.interest = interest;

}

@Override

public String execute() throws Exception {

return SUCCESS;

}

@SuppressWarnings("unchecked")

public Map addSelectResult(List<String> list){//应该从数据库中取，

//这里只是为了模拟，放在Application中

ActionContext context = ActionContext.getContext();

Map map = context.getApplication();

for(String str : list){

if(null==map.get(str)){

map.put(str,1);

}else{

map.put(str, (Integer)map.get(str)+1);

}

}

return map;

}

@SuppressWarnings("unchecked")

public CategoryDataset
createDataset(){//收集数据，并产生相应的Dataset

DefaultCategoryDataset dataset = new DefaultCategoryDataset();

Map map = addSelectResult(this.getInterest());

dataset.setValue((Integer)map.get("football"), "a", "足球");

dataset.setValue((Integer)map.get("basketball"), "b", "篮球");

dataset.setValue((Integer)map.get("volleyball"), "c", "排球");

dataset.setValue((Integer)map.get("pingpong"), "d", "乒乓球");

dataset.setValue((Integer)map.get("badminton"), "e", "羽毛球");

return dataset;

}

}

(4).jsp中的内容：

<s:form action="select">

<s:checkbox label="足球" name="interest"
fieldValue="football" labelposition="left"></s:checkbox>

<s:checkbox label="篮球" name="interest" fieldValue="basketball"
labelposition="left"></s:checkbox>

<s:checkbox label="排球" name="interest" fieldValue="volleyball"
labelposition="left"></s:checkbox>

<s:checkbox label="乒乓球" name="interest" fieldValue="pingpong"
labelposition="left"></s:checkbox>

<s:checkbox label="羽毛球" name="interest" fieldValue="badminton"
labelposition="left"></s:checkbox>

<s:submit></s:submit>

</s:form>

(5).结果：



2.和JFreeChart类似，从lib目录下拷贝struts2-jasperreports-plugin-2.1.8.1.jar包到项目
中，其中的struts-plugin.xml应该为这样：

<struts>

<package name="jasperreports-default"
extends="struts-default">

<result-types>

<result-type name="jasper"
class="org.apache.struts2.views.jasperreports.JasperReportsResult"/>

</result-types>

</package>

</struts>

接下来配置struts.xml，可以参见struts2的帮助文档，从文档可以知道，现在的jasperreport插件基本上都是只支持list
类
型的数据源，因此要是数据源是如JRDataSource等的，可以先存在list中，然后再进行配置，文档中说明了几个参数是必须要指定的，如：

<result name="success"

type="jasper"

>

<param name="location"

>

foo.jasper</param>

<param name="dataSource"

>

mySource</param>

<param name="format"

>

CSV</param>

</result>

仿照其配置，可以写上：

<package name="default" namespace="/"
extends="jasperreports-default">

<action name="HTML"
class="com.biped.struts2.action.ReportAction">

<result type="jasper">

<param name="location">

/reports/reportTest.jasper

</param>

<param name="dataSource">list</param>

<param name="format">HTML</param>

</result>

</action>

</package>

其中的format格式应该参考JasperReportConstants类中的常量。

最后在对应的ReportAction上的java内容为：

package com.biped.struts2.action;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.ArrayList;

import java.util.List;

import com.biped.struts2.domain.User;

import com.opensymphony.xwork2.ActionSupport;

public class ReportAction extends ActionSupport {

private static final long serialVersionUID = 1L;

@SuppressWarnings("unused")

private List<User> list;

public List<User> getList() {

return getDataSource();

}


public void setList(List<User> list) {

this.list = list;

}

// 这里把连接数据库的方法放在一起

private static Connection getConnection() {

Connection conn = null;

try {

Class.forName("com.mysql.jdbc.Driver");

String dbUrl = "jdbc:mysql://localhost:3306/drp";

String username = "root";

String password = "root";

conn = DriverManager.getConnection(dbUrl, username, password);

} catch (ClassNotFoundException e) {

e.printStackTrace();

} catch (SQLException e) {

e.printStackTrace();

}

return conn;

}

@SuppressWarnings("static-access")//取出数
据并填充list

public List<User> getDataSource() {

String sql = "select * from t_user";

Connection conn = this.getConnection();

PreparedStatement statement = null;

ResultSet result = null;

List<User> list = new ArrayList<User>();

try {

User user = null;

statement = conn.prepareStatement(sql);

result = statement.executeQuery();

while (result.next()) {

user = new User();

user.setUserId(result.getString("user_id"));

user.setUserName(result.getString("user_name"));

user.setPassword(result.getString("password"));

user.setEmail(result.getString("email"));

user.setCreateDate(result.getTimestamp("create_date"));

list.add(user);

}

} catch (SQLException e) {

e.printStackTrace();

} finally {

try {

if (result != null) {

result.close();

result = null;

}

if (statement != null) {

statement.close();

statement = null;

}

if (conn != null) {

conn.close();

conn = null;

}

} catch (SQLException e) {

e.printStackTrace();

}

}

return list;

}


@Override

public String execute() throws Exception {

return SUCCESS;

}

}

User.java:

package com.biped.struts2.domain;

import java.util.Date;

public class User {

private String userId;

private String userName;

private String password;

private String email;

private String phone;

public String getUserId() {

return userId;

}

public void setUserId(String userId) {

this.userId = userId;

}

@Override

public String toString() {

return userId+","+userName+","+password+","+phone+","+email;

}

public String getUserName() {

return userName;

}

public void setUserName(String userName) {

this.userName = userName;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

public String getEmail() {

return email;

}

public void setEmail(String email) {

this.email = email;

}

public String getPhone() {

return phone;

}

public void setPhone(String phone) {

this.phone = phone;

}

public Date getCreateDate() {

return createDate;

}

public void setCreateDate(Date createDate) {

this.createDate = createDate;

}

private Date createDate;

}

结果：



原文地址：http://hi.baidu.com/bipedrobot/blog/item/681621480a95e12f09f7ef10.html