Fix #857 DCollecting all values for given key in object array returns empty Collection

json-path/src/main/java/com/jayway/jsonpath/internal/path/PathToken.java

@@ -82,11 +82,11 @@ public abstract class PathToken {
             PathRef pathRef = ctx.forUpdate() ? PathRef.create(model, property) : PathRef.NO_OP;
             if (isLeaf()) {
                 String idx = "[" + String.valueOf(upstreamArrayIndex) + "]";
-                if(idx.equals("[-1]") || ctx.getRoot().getTail().prev().getPathFragment().equals(idx)){
+                if (idx.equals("[-1]") || ctx.getRoot().getTail().prev().getPathFragment().equals(idx) ||
+                        ctx.getRoot().getTail().prev().getPathFragment().equals("[*]")) {
                     ctx.addResult(evalPath, pathRef, propertyVal);
                 }
-            }
-            else {
+            } else {
                 next().evaluate(evalPath, pathRef, propertyVal, ctx);
             }
         } else {
@@ -214,7 +214,8 @@ public abstract class PathToken {
         return super.equals(obj);
     }
 
-    public void invoke(PathFunction pathFunction, String currentPath, PathRef parent, Object model, EvaluationContextImpl ctx) {
+    public void invoke(PathFunction pathFunction, String currentPath, PathRef parent, Object model,
+                       EvaluationContextImpl ctx) {
         ctx.addResult(currentPath, parent, pathFunction.invoke(currentPath, parent, model, ctx, null));
     }
 

json-path/src/test/java/com/jayway/jsonpath/Issue_857.java

@@ -0,0 +1,28 @@
+package com.jayway.jsonpath;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Set;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author skwqyg
+ * @Created on 2022 09 2022/9/10 16:36
+ */
+public class Issue_857 extends BaseTest{
+
+    @Test
+    public void test(){
+        Collection values = JsonPath.parse("[{\"key\":\"first value\"},{\"key\":\"second value\"}]")
+                .read("$..[*].key", java.util.Collection.class);
+        Assert.assertEquals(2,values.size());
+        Set<String> expect = new HashSet<>();
+        expect.add("first value");
+        expect.add("second value");
+        Assert.assertTrue(expect.containsAll(values));
+        System.out.println(values);
+    }
+
+}