从资源文件里读取值代码,Java代码库,德仔网

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【Java】从资源文件里读取值
作者: / 发布于2011/1/14/ 437
<div><span style="color: #0000ff">import</span><span style="color: #000000"> java.io.File;
</span><span style="color: #0000ff">import</span><span style="color: #000000"> java.io.FileInputStream;
</span><span style="color: #0000ff">import</span><span style="color: #000000"> java.io.FileNotFoundException;
</span><span style="color: #0000ff">import</span><span style="color: #000000"> java.io.IOException;
</span><span style="color: #0000ff">import</span><span style="color: #000000"> java.util.Properties;
</span><span style="color: #008000">/**</span><span style="color: #008000">
* ReadProperties.java
* Description: 读取操作属性配置文件
* </span><span style="color: #808080">@author</span><span style="color: #008000"> li.b
* </span><span style="color: #808080">@version</span><span style="color: #008000"> 2.0
* Jun 26, 2008
</span><span style="color: #008000">*/</span><span style="color: #000000">
</span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">class</span><span style="color: #000000"> ReadProperties {

 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * Description: 获取属性配置文件
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> path 资源文件路径
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> Properties Object
 * </span><span style="color: #808080">@throws</span><span style="color: #008000"> FileNotFoundException
 * </span><span style="color: #808080">@throws</span><span style="color: #008000"> IOException
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> Properties getProperties(String path) </span><span style="color: #0000ff">throws</span><span style="color: #000000"> FileNotFoundException, IOException{
 Properties props </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000">;
 File file </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> File(path);
 </span><span style="color: #0000ff">if</span><span style="color: #000000">(file.exists() </span><span style="color: #000000">&&</span><span style="color: #000000"> file.isFile()){
 props </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> Properties();
 props.load(</span><span style="color: #0000ff">new</span><span style="color: #000000"> FileInputStream(file));
 }</span><span style="color: #0000ff">else</span><span style="color: #000000">{
 System.out.println(file.toString() </span><span style="color: #000000">+</span><span style="color: #000000"> </span><span style="color: #000000">"</span><span style="color: #000000">不存在！</span><span style="color: #000000">"</span><span style="color: #000000">);
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> props;
 }
 
 </span><span style="color: #008000">/**</span><span style="color: #008000">
 * Description: 从属性文件获取值
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> props Properties Object
 * </span><span style="color: #808080">@param</span><span style="color: #008000"> key
 * </span><span style="color: #808080">@return</span><span style="color: #008000"> 通过key匹配到的value
 </span><span style="color: #008000">*/</span><span style="color: #000000">
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String getValue(Properties props,String key,String encod){
 String result </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">""</span><span style="color: #000000">;
 String en </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">""</span><span style="color: #000000">;
 String localEN </span><span style="color: #000000">=</span><span style="color: #000000"> System.getProperty(</span><span style="color: #000000">"</span><span style="color: #000000">file.encoding</span><span style="color: #000000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">if</span><span style="color: #000000">(encod </span><span style="color: #000000">!=</span><span style="color: #0000ff">null</span><span style="color: #000000"> </span><span style="color: #000000">&&</span><span style="color: #000000"> </span><span style="color: #000000">!</span><span style="color: #000000">encod.equals(</span><span style="color: #000000">""</span><span style="color: #000000">) ){
 en </span><span style="color: #000000">=</span><span style="color: #000000"> encod;
 }</span><span style="color: #0000ff">else</span><span style="color: #000000">{
 en </span><span style="color: #000000">=</span><span style="color: #000000"> localEN;
 }
 </span><span style="color: #0000ff">try</span><span style="color: #000000"> {
 key </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> String(key.getBytes(en),</span><span style="color: #000000">"</span><span style="color: #000000">ISO-8859-1</span><span style="color: #000000">"</span><span style="color: #000000">);
 result </span><span style="color: #000000">=</span><span style="color: #000000"> props.getProperty(key);
 </span><span style="color: #0000ff">if</span><span style="color: #000000">(</span><span style="color: #000000">!</span><span style="color: #000000">result.equals(</span><span style="color: #000000">""</span><span style="color: #000000">)){
 result </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> String(result.getBytes(</span><span style="color: #000000">"</span><span style="color: #000000">ISO-8859-1</span><span style="color: #000000">"</span><span style="color: #000000">),en); 
 }
 } </span><span style="color: #0000ff">catch</span><span style="color: #000000"> (Exception e) {
 }</span><span style="color: #0000ff">finally</span><span style="color: #000000">{
 </span><span style="color: #0000ff">if</span><span style="color: #000000">(result </span><span style="color: #000000">==</span><span style="color: #000000"> </span><span style="color: #0000ff">null</span><span style="color: #000000">)result </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">""</span><span style="color: #000000">;
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> result;
 }
 }
 
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String getValue(Properties props,String key){
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> getValue(props, key, </span><span style="color: #000000">""</span><span style="color: #000000">);
 }

}</span>
</div>
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