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FreeMarker之根据模型生成HTML代码

2018-08-22 1451

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简介： FreeMarker之根据模型生成HTML代码与FreeMarker根据模型生成Java代码，本质上是一样的，关于生成Java代码可以参考我的这篇文章:FreeMarker之根据模板生成Java代码一、导入依赖 4.

FreeMarker之根据模型生成HTML代码与FreeMarker根据模型生成Java代码，本质上是一样的，关于生成Java代码可以参考我的这篇文章:FreeMarker之根据模板生成Java代码

一、导入依赖

<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>cn.test.freemarker</groupId>
  <artifactId>testFreemarker</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.freemarker</groupId>
      <artifactId>freemarker</artifactId>
      <version>2.3.23</version>
    </dependency>
  </dependencies>
  <build>
    <finalName>testFreemarker</finalName>
  </build>

</project>

二、编写模板

在src/main/java下新建templates包，并在该包下新建user.ftl,内容如下所示:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>用户信息</title>
<!-- 新 Bootstrap 核心 CSS 文件 -->
<link rel="stylesheet"
    href="http://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css" />
</head>
<body style="font-family:'Courier New'">
    <h3 class="text-center">这是用户${username}的信息页！</h3>
    <div class="col-md-6 column">
        <table class="table table-bordered">
            <tr>
                <th>用户名</th>
                <th>密码</th>
                <th>年龄</th>
                <th>地址</th>
            </tr>
            <tr>
                <td>${username}</td>
                <td>${password}</td>
                <td>${age}</td>
                <td>${address}</td>
            </tr>
        </table>
    </div>
</body>
</html>

三、编写Java代码

在src/main/java新增testFreeMarker包，并在该包下创建该两个Java文件

User.java

package testFreemarker;

public class User {

    private String username;

    private String password;

    private Integer age;

    private String address;

    
    public User() {
        super();
        // TODO Auto-generated constructor stub
    }

    public User(String username, String password, Integer age, String address) {
        super();
        this.username = username;
        this.password = password;
        this.age = age;
        this.address = address;
    }

    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 Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getAddress() {
        return address;
    }

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

  
}

CreateHtmlByFreemarker.java

package testFreemarker;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;

import freemarker.core.ParseException;
import freemarker.template.Configuration;
import freemarker.template.MalformedTemplateNameException;
import freemarker.template.Template;
import freemarker.template.TemplateException;
import freemarker.template.TemplateNotFoundException;

public class CreateHtmlByFreemarker {
        private static final String TEMPLATE_PATH = "src/main/java/templates";
        private static final String CLASS_PATH = "src/main/webapp/product";
        
        public static void main(String[] args) {
            // step1 创建freeMarker配置实例
            Configuration configuration = new Configuration();
            Writer out = null;
            try {
                // step2 获取模版路径
                configuration.setDirectoryForTemplateLoading(new File(TEMPLATE_PATH));
                // step3 创建数据模型
                Map<String, Object> dataMap = new HashMap<String, Object>();
                dataMap.put("username", "zhangsan");
                dataMap.put("password", "123456");
                dataMap.put("age", "18");
                dataMap.put("address", "test");
                // step4 加载模版文件
                Template template = configuration.getTemplate("user.ftl");
                // step5 生成数据
                File docFile = new File(CLASS_PATH + "\\" + "user.html");
                out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(docFile)));
                // step6 输出文件
                template.process(dataMap, out);
                System.out.println("^^^^^^^^^^^^^^^^^^^^^^^^user.ftl 文件创建成功 !");
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (null != out) {
                        out.flush();
                    }
                } catch (Exception e2) {
                    e2.printStackTrace();
                }
            }
        }

}