Bugfix:Type convert error in JsonPathSelector #129

webmagic-core/src/main/java/us/codecraft/webmagic/selector/JsonPathSelector.java

@@ -46,9 +46,12 @@ public class JsonPathSelector implements Selector {
             return list;
         }
         if (object instanceof List) {
-            return (List<String>) object;
+            List<Object> items = (List<Object>) object;
+            for (Object item : items) {
+                list.add(String.valueOf(item));
+            }
         } else {
-            list.add(object.toString());
+            list.add(String.valueOf(object));
         }
         return list;
     }

webmagic-core/src/test/java/us/codecraft/webmagic/selector/ExtractorsTest.java

 package us.codecraft.webmagic.selector;
 
-import junit.framework.Assert;
 import org.junit.Test;
 
+import static org.assertj.core.api.Assertions.assertThat;
 import static us.codecraft.webmagic.selector.Selectors.*;
 
 /**
@@ -16,19 +16,19 @@ public class ExtractorsTest {
 
     @Test
     public void testEach() {
-        Assert.assertEquals("<a href=\"xxx\">aabbcc</a>", $("div h1 a").select(html));
-        Assert.assertEquals("xxx", $("div h1 a", "href").select(html));
-        Assert.assertEquals("aabbcc", $("div h1 a", "innerHtml").select(html));
-        Assert.assertEquals("xxx", xpath("//a/@href").select(html));
-        Assert.assertEquals("xxx", regex("a href=\"(.*)\"").select(html));
-        Assert.assertEquals("xxx", regex("(a href)=\"(.*)\"", 2).select(html));
+        assertThat($("div h1 a").select(html)).isEqualTo("<a href=\"xxx\">aabbcc</a>");
+        assertThat($("div h1 a", "href").select(html)).isEqualTo("xxx");
+        assertThat($("div h1 a", "innerHtml").select(html)).isEqualTo("aabbcc");
+        assertThat(xpath("//a/@href").select(html)).isEqualTo("xxx");
+        assertThat(regex("a href=\"(.*)\"").select(html)).isEqualTo("xxx");
+        assertThat(regex("(a href)=\"(.*)\"", 2).select(html)).isEqualTo("xxx");
     }
 
     @Test
     public void testCombo() {
-        Assert.assertEquals("bb", and($("title"), regex("aa(bb)cc")).select(html2));
+        assertThat(and($("title"), regex("aa(bb)cc")).select(html2)).isEqualTo("bb");
         OrSelector or = or($("div h1 a", "innerHtml"), xpath("//title"));
-        Assert.assertEquals("aabbcc", or.select(html));
-        Assert.assertEquals("<title>aabbcc</title>", or.select(html2));
+        assertThat(or.select(html)).isEqualTo("aabbcc");
+        assertThat(or.select(html2)).isEqualTo("<title>aabbcc</title>");
     }
 }

webmagic-core/src/test/java/us/codecraft/webmagic/selector/JsonPathSelectorTest.java

 package us.codecraft.webmagic.selector;
 
-import junit.framework.Assert;
 import org.junit.Test;
 
 import java.util.List;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 /**
  * @author code4crafter@gmai.com <br>
  */
@@ -32,16 +33,16 @@ public class JsonPathSelectorTest {
             "}";
 
     @Test
-    public void test() {
+    public void testJsonPath() {
         JsonPathSelector jsonPathSelector = new JsonPathSelector("$.store.book[*].author");
         String select = jsonPathSelector.select(text);
         List<String> list = jsonPathSelector.selectList(text);
-        Assert.assertNotNull(select);
-        Assert.assertNotNull(list);
+        assertThat(select).isEqualTo("Nigel Rees");
+        assertThat(list).contains("Nigel Rees","Evelyn Waugh");
         jsonPathSelector = new JsonPathSelector("$.store.book[?(@.category == 'reference')]");
         list = jsonPathSelector.selectList(text);
         select = jsonPathSelector.select(text);
-        Assert.assertNotNull(list);
-        Assert.assertNotNull(select);
+        assertThat(select).isEqualTo("{\"author\":\"Nigel Rees\",\"title\":\"Sayings of the Century\",\"category\":\"reference\",\"price\":8.95}");
+        assertThat(list).contains("{\"author\":\"Nigel Rees\",\"title\":\"Sayings of the Century\",\"category\":\"reference\",\"price\":8.95}");
     }
 }

webmagic-core/src/test/java/us/codecraft/webmagic/selector/RegexSelectorTest.java

 package us.codecraft.webmagic.selector;
 
-import org.junit.Assert;
+import org.assertj.core.api.Assertions;
 import org.junit.Test;
 
 /**
@@ -20,6 +20,6 @@ public class RegexSelectorTest {
         String source = "(hello world";
         RegexSelector regexSelector = new RegexSelector(regex);
         String select = regexSelector.select(source);
-        Assert.assertEquals(source,select);
+        Assertions.assertThat(select).isEqualTo(source);
     }
 }

webmagic-core/src/test/java/us/codecraft/webmagic/utils/UrlUtilsTest.java

@@ -49,11 +49,6 @@ public class UrlUtilsTest {
         assertThat(replacedHtml).isEqualTo("<a href=\"http://www.dianping.com/start\" tag>");
     }
 
-    @Test
-    public void test(){
-        UrlUtils.canonicalizeUrl("start tag", "http://www.dianping.com/");
-    }
-
     @Test
     public void testGetDomain(){
         String url = "http://www.dianping.com/aa/";