使用spm build 批量打包压缩seajs 代码

一，安装环境

1.安装spm

spm工具是基于node（nodejs的服务平台）的,因此我们需要先安装 node 和 npm 下载地址：http://nodejs.org/#download.下载完成后安装即可。

node安装完成后，找到cmd命令文件以管理员的方式打开，输入以下命令进行安装：

npm install spm -g

在此过程中，可能需要你很长的时间等待。（偶尔可能连接失败了，你需要关闭cmd后重新开启并执行同样的命令，过程将继续）

安装完成后，恭喜你，可以使用了。

2.spm的使用：

使用spm其实就是执行cmd命令，安装完成后，你就可以使用命令了 (当然有很多命令的)，输入：

spm help

你会看到所有的命令。我们主要用的命令就是

spm build

当然得注意两点：

(1).需要将执行目录切换到项目。比如你的项目js目录在D:/www/spm/js下；则需要先用cmd命令切换到D:/www/spm/js.见下图

(2).项目的js目录结构里面必须包含src目录，即未合并和压缩的js文件（seajs模块文件）。目录结构约定传送门。

最后，这些只是将了我接触的时候遇到的问题，具体spm命令及使用细节请见官方文档

https://github.com/spmjs/spm/

二，批量压缩类

写了个类查找所有JS文件，调用DOS命令执行文件的压缩

package com.tank.test;

 

import java.io.BufferedReader;

import java.io.File;

import java.io.IOException;

import java.io.InputStreamReader;

 

import org.apache.log4j.Logger;

import org.apache.log4j.spi.LoggerFactory;

 

/**

 * @author tank

 * @date:Sep 24, 2012 4:14:58 PM

 * @description:

 * @version :1.0

 */

public class TestSeaJS {

    private static final Logger logger = Logger.getLogger(TestSeaJS.class);

    private static final String SRC_PATH = "F:/MyEclipseforSpring8.6/showcang/WebRoot/js";

    private static final String OUT_PATH = "D:/apache-tomcat-6.0.35/webapps/showcang/js";

    //private static final String APP_URL = "http://127.0.0.1:8080/js";

    private static final String APP_URL = "http://www.showcang.com/js";

    // private static final String CMD = "spm build #0# --combine --app_url #1#

    // --app_path #2# --out_path #3#";

    private static StringBuffer sb = new StringBuffer();

  

    public static void main(String[] args) {

        //String cmdStr = "spm build ${0} --combine --app_url ${1} --app_path ${2} --out_path ${3}";

        File file = new File(SRC_PATH);

        StringBuffer sbcontext = new StringBuffer();

        // sbcontext.append("d: \r");

        // sbcontext.append("cd D:/Soft/seajs-spm-ab7a728/demo/js \r");

        findFile(file, sbcontext);

        new FileHelper().getWriteTXT("c:/seajs.bat", sbcontext.toString());

        logger.info("压缩完成!");

    }

 

    public static void findFile(File file, StringBuffer sbcontext) {

        File[] dir = file.listFiles();

        for (File f : dir) {

            if (f.isFile()) {

                String filepath = f.getAbsolutePath();

                if (filepath != null && filepath.toLowerCase().endsWith("js")) {

                    String dirpath = f.getParentFile().getPath();

                    String outPath = dirpath.substring(SRC_PATH.length());

                    sb.delete(0, sb.length());

 

                    sb.append("spm build ").append(filepath).append(" --combine --app_url ").append(APP_URL).append(" --app_path ").append(dirpath).append(

                            " --out_path ").append(OUT_PATH).append(outPath);

 

                    sbcontext.append(sb.toString());

                    Runtime rt = Runtime.getRuntime();

                    BufferedReader br = null;

                    try {

                        Process process = rt.exec("cmd  /C " + sb.toString());

                        br = new BufferedReader(new InputStreamReader(process.getInputStream()));

                        String line = br.readLine();

                        while (line != null) {

                            logger.info(line);

                            line = br.readLine();

                        }

                    } catch (IOException e) {

                        e.printStackTrace();

                        logger.error(e.getMessage());

                    } finally {

                        if (br != null) {

                            try {

                                br.close();

                            } catch (Exception e) {

                                e.printStackTrace();

                                logger.error(e.getMessage());

                            }

                        }

                    }

                    sbcontext.append("\r");

                }

            } else if (file.isDirectory()) {

                findFile(f, sbcontext);

            }

        }

 

    }

 

}

　　文件帮助类：

package com.tank.test;

 

import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

 

/**

 * @author tank

 * @date:Sep 26, 2011 9:03:29 PM

 * @description: 纯文本文件操作类 .txt

 * @version :

 */

public class FileHelper {

    public String getReadTXT(String path) {

        BufferedReader br = null;

        try {

            br = new BufferedReader(new InputStreamReader(new FileInputStream(path), "utf-8"));

            String data = null;

            StringBuffer sbf = new StringBuffer();

            while ((data = br.readLine()) != null) {

                sbf.append(data);

            }

 

            return sbf.toString();

        } catch (FileNotFoundException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } finally {

            if (br != null) {

                try {

                    br.close();

                } catch (IOException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

            }

 

        }

        return null;

    }

 

    public boolean getWriteTXT(String path, String writeContext) {

        OutputStreamWriter fw = null;

        try {

 

            fw = new OutputStreamWriter(new FileOutputStream(path), "utf-8");

 

            fw.write(writeContext, 0, writeContext.length());

            fw.flush();

 

            return true;

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

            return false;

        } finally {

            try {

                fw.close();

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        }

 

    }

 

 

}

　　三，写批处理调用

java -jar compass.jar

　　执行bat即可！

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