Learning from: https://www.cnblogs.com/lsy-blogs/p/9243281.html
A, jar package used:
Second, the basic idea of dynamic export of Word templates:
1, first created by his own word to be exported in the form of the word + text template, template, fill in where needed to fill in the contents of $ {} braces for the background passed in the parameter name, then save it as a template xml format;
2, xml format files make the appropriate changes:
(1)} {$ modified location is located, so $ {} in a tag, since the replacement value is identified according} {$, $ {} must make in a tag:
(2) if required cycle output, you need to add <#list> </> tag, similar to the enhanced for loop, whether or text form as long as the required cycle output, as long as the cycle of the output data to find a good label, then use <#list> </> expansion live, then modify the corresponding parameter name $ {} to loop the output data:
Third, using the word template freemaker achieve dynamic export basic steps:
1, the project introduced freemaker engine jar package:
2, the word freemaker export of tools into the project, and modify the path and name of the corresponding word of xml template located:
3, write code, to obtain the corresponding data word in need, ultimately stored in a map to (name of the parameter must correspond with the word xml template parameter name remains the same):
4, in preparing the general method, the results of the map data is transmitted to the tool class methods, to achieve word derived;
5, through the above steps, can be changed dynamically derive the word.
Fourth, the need to pay attention:
1, word templates in xml} {$ a must be in the same label;
2, if there is data to be output from the cycle, each piece of data in the background must be placed in an object, not on a map, the data output cycle in the background is a list stored in the corresponding set;
3, backstage pass parameters to the word template can only pass a parameter map, so whether it is a single parameter list or collection of objects, eventually integrated in a map stored in;
4、后台传递给word模板中的参数，不要为null，如果是不存在的值，那么就传递空字符串，也不要传递null进来。
五、word导出工具类代码如下：
package com.jeecg.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.net.URLEncoder;
import java.util.Map;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import freemarker.template.Configuration;
import freemarker.template.Template;
public class WordUtils { // 配置信息,代码本身写的还是很可读的,就不过多注解了
private static Configuration configuration = null;
// 这里注意的是利用WordUtils的类加载器动态获得模板文件的位置
private static final String templateFolder = WordUtils.class.getClassLoader().getResource("../../").getPath()
+ "export/template/";
static {
configuration = new Configuration();
configuration.setDefaultEncoding("utf-8");
try {
configuration.setDirectoryForTemplateLoading(new File(templateFolder));
} catch (IOException e) {
e.printStackTrace();
}
}
private WordUtils() {
throw new AssertionError();
}
public static void exportMillCertificateWord(HttpServletRequest request, HttpServletResponse response, Map map,String fileName)
throws IOException {
Template freemarkerTemplate = configuration.getTemplate("TMCatalogMainTemplateBatchDown.xml");
File file = null;
InputStream fin = null;
ServletOutputStream out = null;
try {
// 调用工具类的createDoc方法生成Word文档
file = createDoc(map, freemarkerTemplate);
fin = new FileInputStream(file);
response.setCharacterEncoding("utf-8");
response.setContentType("application/msword");
// 设置浏览器以下载的方式处理该文件名
fileName = fileName+".doc";
response.setHeader("Content-Disposition",
"attachment;filename=".concat(String.valueOf(URLEncoder.encode(fileName, "UTF-8"))));
out = response.getOutputStream();
byte[] buffer = new byte[512]; // 缓冲区
int bytesToRead = -1;
// 通过循环将读入的Word文件的内容输出到浏览器中
while ((bytesToRead = fin.read(buffer)) != -1) {
out.write(buffer, 0, bytesToRead);
}
} finally {
if (fin != null)
fin.close();
if (out != null)
out.close();
if (file != null)
file.delete(); // 删除临时文件
}
}
private static File createDoc(Map<?, ?> dataMap, Template template) {
String name = "test.doc";
File f = new File(name);
Template t = template;
try {
// 这个地方不能使用FileWriter因为需要指定编码类型否则生成的Word文档会因为有无法识别的编码而无法打开
Writer w = new OutputStreamWriter(new FileOutputStream(f), "utf-8");
t.process(dataMap, w);
w.close();
} catch (Exception ex) {
ex.printStackTrace();
throw new RuntimeException(ex);
}
return f;
}
}
六、导出多个word的压缩包，思路详情和代码见连接：