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fix code
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@ -6,9 +6,11 @@
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## 5.3.4 (2020-05-06)
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## 5.3.4 (2020-05-06)
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### 新特性
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### 新特性
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* 【core 】 增加URLUtil.getContentLength方法(issue#I1GB1Z@Gitee)
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### Bug修复
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### Bug修复
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* 【extra 】 修复Ftp设置超时问题
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* 【extra 】 修复Ftp设置超时问题
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* 【extra 】 修复TreeUtil根据id查找子节点时的NPE问题(pr#120@Gitee)
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-------------------------------------------------------------------------------------------------------------
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-------------------------------------------------------------------------------------------------------------
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@ -28,7 +28,7 @@ public class TimedCache<K, V> extends AbstractCache<K, V> {
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* @param timeout 超时(过期)时长,单位毫秒
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* @param timeout 超时(过期)时长,单位毫秒
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*/
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*/
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public TimedCache(long timeout) {
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public TimedCache(long timeout) {
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this(timeout, new HashMap<K, CacheObj<K, V>>());
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this(timeout, new HashMap<>());
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}
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}
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/**
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/**
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@ -15,11 +15,13 @@ import java.io.File;
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import java.io.IOException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStream;
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import java.io.UnsupportedEncodingException;
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import java.io.UnsupportedEncodingException;
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import java.net.HttpURLConnection;
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import java.net.JarURLConnection;
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import java.net.JarURLConnection;
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import java.net.MalformedURLException;
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import java.net.MalformedURLException;
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import java.net.URI;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.net.URISyntaxException;
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import java.net.URL;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.URLStreamHandler;
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import java.net.URLStreamHandler;
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import java.nio.charset.Charset;
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import java.nio.charset.Charset;
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import java.util.Map;
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import java.util.Map;
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@ -738,4 +740,30 @@ public class URLUtil {
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public static String buildQuery(Map<String, ?> paramMap, Charset charset) {
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public static String buildQuery(Map<String, ?> paramMap, Charset charset) {
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return UrlQuery.of(paramMap).build(charset);
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return UrlQuery.of(paramMap).build(charset);
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}
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}
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/**
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* 获取指定URL对应资源的内容长度,对于Http,其长度使用Content-Length头决定。
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*
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* @param url URL
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* @return 内容长度,未知返回-1
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* @throws IORuntimeException IO异常
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* @since 5.3.4
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*/
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public static long getContentLength(URL url) throws IORuntimeException{
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if(null == url){
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return -1;
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}
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URLConnection conn = null;
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try {
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conn = url.openConnection();
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return conn.getContentLengthLong();
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} catch (IOException e) {
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throw new IORuntimeException(e);
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} finally {
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if (conn instanceof HttpURLConnection) {
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((HttpURLConnection)conn).disconnect();
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}
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}
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}
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}
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}
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