echarts 生成统计图时，自动保存图片到服务器，并使用freemarker生成word

echarts 生成统计图时，自动保存图片到服务器，并使用freemarker生成word。

1.项目工程截图如下：

需要echarts包和生成word的freemarker-2.3.8.jar包

2.index.jsp页面中的代码：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>



  
    
    
    
	
	
	    
	
	
	
  
  
  
    
    

    
    
    

3.web.xml

  	
  
    index.jsp
  
  
  
    saveImage
    com.servlet.SaveImage
  

  
    saveImage
    /servlet/saveImage
  

4.SaveImage.java

package com.servlet;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.word.WordUtil;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class SaveImage extends HttpServlet {
	private static final long serialVersionUID = -1915463532411657451L;
	 
    public void init() throws ServletException {  
       
    } 
    protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
    	
    }
 
    protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
    	String a = request.getParameter("a");
        try {
            String[] url = a.split(",");
            String u = url[1];
            // Base64解码
            byte[] b = new BASE64Decoder().decodeBuffer(u);
            WordUtil wordUtil = new WordUtil();
            String fileStr = wordUtil.saveFile(); 
            // 生成图片
            OutputStream out = new FileOutputStream(new File(fileStr+"\\test.png"));
            out.write(b);
            out.flush();
            out.close();
            
            //数据模拟，如果是真实编写，可以建service层，dao层进行数据的获取
            Map dataMap = new HashMap();
            dataMap = getData();
            //生产word
            wordUtil.createWord("2.ftl", fileStr+"\\test.doc", dataMap);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    public Map getData() {
    	Map dataMap = new HashMap();
    	WordUtil wordUtil = new WordUtil();
    	String fileStr = wordUtil.saveFile();
    	
    	dataMap.put("image", getImageStr(fileStr+"\\test.png"));
		List> list = new ArrayList>();
		for (int i = 0; i < 2; i++) {
			Map map = new HashMap();
			map.put("xuhao", i);
			map.put("neirong", "内容"+i);
			list.add(map);
			
		}
		dataMap.put("list", list);
		dataMap.put("info", "测试");
		return dataMap;
    }
    public String getImageStr(String imgFile) {
		InputStream in = null;
		byte[] data = null;
		try {
			in = new FileInputStream(imgFile);
			data = new byte[in.available()];
			in.read(data);
			in.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
		BASE64Encoder encoder = new BASE64Encoder();
		return encoder.encode(data);
	}
}

5.WordUtil.java

package com.word;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Map;

import sun.misc.BASE64Encoder;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;

public class WordUtil {
	private Configuration configuration = null;

	public WordUtil() {
		configuration = new Configuration();
		configuration.setDefaultEncoding("utf-8");

	}

	public void createWord(String templetName, String filePathName, Map dataMap) {
		configuration.setClassForTemplateLoading(this.getClass(), "/com/word"); // FTL文件所存在的位置
		Template t = null;
		try {
			// 获取模版文件
			t = configuration.getTemplate(templetName);
		} catch (IOException e) {
			e.printStackTrace();
		}
		// 生成文件的路径和名称
		File outFile = new File(filePathName);
		Writer out = null;
		try {
			out = new BufferedWriter(new OutputStreamWriter(
					new FileOutputStream(outFile)));
		} catch (FileNotFoundException e1) {
			e1.printStackTrace();
		}

		try {
			t.process(dataMap, out);
		} catch (TemplateException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public String getImageStr(String imgFile) {
		InputStream in = null;
		byte[] data = null;
		try {
			in = new FileInputStream(imgFile);
			data = new byte[in.available()];
			in.read(data);
			in.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
		BASE64Encoder encoder = new BASE64Encoder();
		return encoder.encode(data);
	}
	public String saveFile() {
		String nowpath = System.getProperty("user.dir");
		String path = nowpath.replace("bin", "webapps");
		path += "\\"+"TestWeb"+"\\"+"word";
		File tmp = new File(path);
		if (!tmp.exists()) {
			tmp.mkdirs();
		}
		return path;
	}
}

6.模版的制作：

1).新建word文档，内容如下图：

2).把word文档另存为Word 2003 XML 文档，打开内容，如下图：

在之前<#list list as list>,在之后加，如果不循环，不需要加。接在把图片生产的一大串字符改成${image},试情况改此文件的编码。

3).把修改好的xml后缀改为ftl。模版做好，放在指定位置即可。跑完程序后，生产如下word:

大功告成!有什么问题，大家一起讨论!

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