Feature/example test (#24)

example docs

jsonUtil/json_to_struct_example_test.go

@@ -0,0 +1,26 @@
+package jsonUtil
+
+import "fmt"
+
+func ExampleJsonToStruct() {
+	jsonData := `{
+		"name": "make",
+		"age": "22",
+		"is_use": "1"
+	}`
+
+	var people struct {
+		Name  string `json:"name,omitempty"`
+		Age   int    `json:"age"`
+		IsUse bool   `json:"is_use"`
+	}
+
+	if err := JsonToStruct(jsonData, &people); err != nil {
+		fmt.Println(err)
+		return
+	}
+	fmt.Printf("%+v", people)
+
+	// Output:
+	// {Name:make Age:22 IsUse:true}
+}