註意:

　　properties文件要放在classPath下面，也就是與src下。

path.properties

perfectMaterial=fileLibrary/completeFile/perfectMaterial
perfectMaterialPDF=fileLibrary/completeFile/perfectMaterialPDF
promiseFile=fileLibrary/originalFile/promiseFile
signatureFile=signature
signatureBackupFile=signatureBackup
investigatePicture
 
=fileLibrary/originalFile/investigatePicture
auditPicture=fileLibrary/originalFile/auditPicture
auditReprt=fileLibrary/originalFile/auditReprt
sevenMaterial=fileLibrary/originalFile/sevenMaterial
sevenMaterialPdf=fileLibrary/originalFile/PDFFile/sevenMaterialPdf
auditReportWordAndPdf=fileLibrary/originalFile/auditReportWordAndPdf
jdbc.test
 
=fileLibrary/originalFile/auditReportWordAndPdf

ResourcesUtil.java

package Utils.ResourceUtil;


import java.io.Serializable;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.ResourceBundle;
 
import java.util.Set;

/**
 * 資源文件讀取工具類
 * 
 */
public class ResourcesUtil implements Serializable {

    private static final long serialVersionUID = -7657898714983901418L;

    /**
     * 系統語言環境，默認為中文zh
     */
    public static final String LANGUAGE = "zh";

    /**
     * 系統國家環境，默認為中國CN
     */
    public static final String COUNTRY = "CN";
    private static Locale getLocale() {
        Locale locale = new Locale(LANGUAGE, COUNTRY);
        return locale;
    }

    /**
     * 根據語言、國家、資源文件名和key名字獲取資源文件值
     * 
     * @param language
     *            語言
     * 
     * @param country
     *            國家
     * 
     * @param baseName
     *            資源文件名
     * 
     * @param section
     *            key名字
     * 
     * @return 值
     */
    private static String getProperties(String baseName, String section) {
        String retValue = "";
        try {
            Locale locale = getLocale();
            ResourceBundle rb = ResourceBundle.getBundle(baseName, locale);
            retValue = (String) rb.getObject(section);
        } catch (Exception e) {
            e.printStackTrace();
            // TODO 添加處理
        }
        return retValue;
    }

    /**
     * 通過key從資源文件讀取內容
     * 
     * @param fileName
     *            資源文件名
     * 
     * @param key
     *            索引
     * 
     * @return 索引對應的內容
     */
    public static String getValue(String fileName, String key) {
        String value = getProperties(fileName,key);
        return value;
    }

    public static List<String> gekeyList(String baseName) {
        Locale locale = getLocale();
        ResourceBundle rb = ResourceBundle.getBundle(baseName, locale);

        List<String> reslist = new ArrayList<String>();

        Set<String> keyset = rb.keySet();
        for (Iterator<String> it = keyset.iterator(); it.hasNext();) {
            String lkey = (String)it.next();
            reslist.add(lkey);
        }

        return reslist;

    }

    /**
     * 通過key從資源文件讀取內容，並格式化
     * 
     * @param fileName
     *            資源文件名
     * 
     * @param key
     *            索引
     * 
     * @param objs
     *            格式化參數
     * 
     * @return 格式化後的內容
     */
    public static String getValue(String fileName, String key, Object[] objs) {
        String pattern = getValue(fileName, key);
        String value = MessageFormat.format(pattern, objs);
        return value;
    }

    public static void main(String[] args) {
        System.out.println(getValue("resources.messages", "101",new Object[]{100,200}));
        
        
        //根據操作系統環境獲取語言環境
        /*Locale locale = Locale.getDefault();
        System.out.println(locale.getCountry());//輸出國家代碼
        System.out.println(locale.getLanguage());//輸出語言代碼s
        
        //加載國際化資源（classpath下resources目錄下的messages.properties，如果是中文環境會優先找messages_zh_CN.properties）
        ResourceBundle rb = ResourceBundle.getBundle("resources.messages", locale);
        String retValue = rb.getString("101");//101是messages.properties文件中的key
        System.out.println(retValue);
        
        //信息格式化，如果資源中有{}的參數則需要使用MessageFormat格式化，Object[]為傳遞的參數，數量根據資源文件中的{}個數決定
        String value = MessageFormat.format(retValue, new Object[]{100,200});
        System.out.println(value);
*/

    }
}

測試代碼

package Utils.ResourceUtil;

import org.junit.Test;

public class TestUtils {

    @Test
    public void Test1(){
        System.out.println(ResourcesUtil.getValue("path", "investigatePicture"));
        System.out.println(ResourcesUtil.getValue("path", "auditReprt"));
        System.out.println(ResourcesUtil.getValue("path", "jdbc.test"));
    }
}

結果:

fileLibrary/originalFile/investigatePicture
fileLibrary/originalFile/auditReprt
fileLibrary/originalFile/auditReportWordAndPdf

ResourceUtils讀取properties文件