freemark模板导出pdf

使用freeMark作为模板导出pdf

pom引入如下：

  <dependency>
   <groupId>org.xhtmlrenderer</groupId>
   <artifactId>flying-saucer-pdf-itext5</artifactId>
   <version>9.1.1</version>
  </dependency>
  <dependency>
   <artifactId>freemarker</artifactId>
   <groupId>freemarker</groupId>
   <version>2.3.8</version>
  </dependency><dependency>
   <groupId>org.xhtmlrenderer</groupId>
   <artifactId>flying-saucer-pdf-itext5</artifactId>
   <version>9.1.1</version>
  </dependency>
  <dependency>
   <artifactId>freemarker</artifactId>
   <groupId>freemarker</groupId>
   <version>2.3.8</version>
  </dependency>

创建freemark控制类：

package com.test.domains.ceshi.pdf.demo;

import freemarker.template.Configuration;  

public class FreemarkerConfiguration {     
         
    private static Configuration config = null;     
         
    /**   
     * Static initialization.   
     *    
     * Initialize the configuration of Freemarker.   
     */    
    static{     
        config = new Configuration();     
        config.setClassForTemplateLoading(FreemarkerConfiguration.class, "/template/");     
        config.setTemplateUpdateDelay(0);  
    }     
         
    public static Configuration getConfiguation(){     
        return config;     
    }     
    
}

创建html生成器

package com.test.domains.ceshi.pdf.demo;

    
import java.io.BufferedWriter;  
import java.io.StringWriter;  
import java.util.Map;  
import freemarker.template.Configuration;  
import freemarker.template.Template;     
    
public class HtmlGenerator {     
    /** 
     * @param template 
     * @param variables 
     * @return 
     * @throws Exception 
     */  
    public static String generate(String template, Map params) throws Exception{     
        Configuration config = FreemarkerConfiguration.getConfiguation();    
        config.setDefaultEncoding("UTF-8");  
        Template tp = config.getTemplate(template);     
        StringWriter stringWriter = new StringWriter();   
        BufferedWriter writer = new BufferedWriter(stringWriter);    
        tp.setEncoding("UTF-8");       
        tp.process(params, writer);       
        String htmlStr = stringWriter.toString();     
        writer.flush();       
        writer.close();     
        return htmlStr;     
    }     
    
}

编写user类用于给前台

package com.test.domains.ceshi.pdf.demo;

public class User {
 
 private String id;
 private String name;
 private String ip;
 private String address;

 public String getId() {
  return id;
 }

 public void setId(String id) {
  this.id = id;
 }

 public String getName() {
  return name;
 }

 public void setName(String name) {
  this.name = name;
 }

 public String getIp() {
  return ip;
 }

 public void setIp(String ip) {
  this.ip = ip;
 }

 public String getAddress() {
  return address;
 }

 public void setAddress(String address) {
  this.address = address;
 }

}

编写主程序，调用上面文件

package com.test.domains.ceshi.pdf.demo;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.xhtmlrenderer.pdf.ITextFontResolver;
import org.xhtmlrenderer.pdf.ITextRenderer;

import com.itextpdf.text.pdf.BaseFont;

public class PdfTest {

 public static void main(String[] args) throws Exception {
  
  List<User> userList = new ArrayList<User>();
  for(int i =0;i<19;i++){
   User user = new User();
   user.setId(i+"");
   user.setName("张三"+i);
   user.setAddress("北京市海点"+i);
   user.setIp("192.168.1."+i);
   userList.add(user);
  }
  
  exportPDF(userList);
 }

 public static void exportPDF(List<User> userList) throws Exception {
  OutputStream os = null;
  String htmlStr;
  Map<String, Object> params = new HashMap<String, Object>();
  Map data = new HashMap();
  try {
   /**
    * xxx数据生成逻辑
    **/
   data.put("userList", userList);
   data.put("projects", "aaa");

   // 通过freemaker模板生成html
   htmlStr = HtmlGenerator.generate("pdf.ftl", data);
   ITextRenderer renderer = new ITextRenderer();
   String appPath = "";
   try{
   renderer.setDocumentFromString(htmlStr);
   }catch(Exception e){
    
   }

   // 解决中文支持问题
   ITextFontResolver fontResolver = renderer.getFontResolver();
   fontResolver.addFont("/template" + File.separator + "simsun.ttc", BaseFont.IDENTITY_H,
     BaseFont.NOT_EMBEDDED);

   os = new FileOutputStream(new File("D:/pdf.pdf"));
   renderer.layout();
   renderer.createPDF(os, true);

   os.flush();
   System.err.println("生成pdf成功");
  } catch (Exception e) {
   e.printStackTrace();
  } finally {
   if (null != os) {
    try {
     os.close();
    } catch (IOException e) {
     e.printStackTrace();
    }
   }
  }

 }

}

至此可完成模板导出pdf文件

项目下载地址：freemark模板导出pdf