New method Proxy#create.

webmagic-core/src/main/java/us/codecraft/webmagic/proxy/Proxy.java

@@ -20,6 +20,21 @@ public class Proxy {
 
     private String password;
 
+    public static Proxy create(final URI uri) {
+        Proxy proxy = new Proxy(uri.getHost(), uri.getPort(), uri.getScheme());
+        String userInfo = uri.getUserInfo();
+        if (userInfo != null) {
+            String[] up = userInfo.split(":");
+            if (up.length == 1) {
+                proxy.username = up[0].isEmpty() ? null : up[0];
+            } else {
+                proxy.username = up[0].isEmpty() ? null : up[0];
+                proxy.password = up[1].isEmpty() ? null : up[1];
+            }
+        }
+        return proxy;
+    }
+
     public Proxy(String host, int port) {
         this(host, port, null);
     }

webmagic-core/src/test/java/us/codecraft/webmagic/proxy/ProxyTest.java

@@ -1,7 +1,9 @@
 package us.codecraft.webmagic.proxy;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 
+import java.net.URI;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -45,6 +47,44 @@ public class ProxyTest {
         }
     }
 
+    @Test
+    public void testCreate() {
+        Proxy proxy = Proxy.create(URI.create("//127.0.0.1:8080"));
+        assertNull(proxy.getScheme());
+        assertNull(proxy.getUsername());
+        assertNull(proxy.getPassword());
+        assertEquals("127.0.0.1", proxy.getHost());
+        assertEquals(8080, proxy.getPort());
+
+        proxy = Proxy.create(URI.create("http://127.0.0.1:8080"));
+        assertEquals("http", proxy.getScheme());
+        assertNull(proxy.getUsername());
+        assertNull(proxy.getPassword());
+        assertEquals("127.0.0.1", proxy.getHost());
+        assertEquals(8080, proxy.getPort());
+
+        proxy = Proxy.create(URI.create("//username:password@127.0.0.1:8080"));
+        assertNull(proxy.getScheme());
+        assertEquals("username", proxy.getUsername());
+        assertEquals("password", proxy.getPassword());
+        assertEquals("127.0.0.1", proxy.getHost());
+        assertEquals(8080, proxy.getPort());
+
+        proxy = Proxy.create(URI.create("//username@127.0.0.1:8080"));
+        assertNull(proxy.getScheme());
+        assertEquals("username", proxy.getUsername());
+        assertNull(proxy.getPassword());
+        assertEquals("127.0.0.1", proxy.getHost());
+        assertEquals(8080, proxy.getPort());
+
+        proxy = Proxy.create(URI.create("//:password@127.0.0.1:8080"));
+        assertNull(proxy.getScheme());
+        assertNull(proxy.getUsername());
+        assertEquals("password", proxy.getPassword());
+        assertEquals("127.0.0.1", proxy.getHost());
+        assertEquals(8080, proxy.getPort());
+    }
+
     @Test
     public void testToString() {
         assertEquals("//127.0.0.1:8080", new Proxy("127.0.0.1", 8080).toString());