java 断言错误：JUnit 测试中的 JSON 路径没有值
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Assertion error: No value for JSON Path in JUnit test
提问by Robin van Aalst
I have written a test and it succeeded before but now I get an AssertionError: No value for JSON Path.
我已经写了一个测试，它之前成功了，但现在我得到一个 AssertionError: No value for JSON Path。
@Test
public void testCreate() throws Exception {
Wine wine = new Wine();
wine.setName("Bordeaux");
wine.setCost(BigDecimal.valueOf(10.55));
new Expectations() {
{
wineService.create((WineDTO) any);
result = wine;
}
};
MockMultipartFile jsonFile = new MockMultipartFile("form", "", "application/json", "{\"name\":\"Bordeaux\", \"cost\": \"10.55\"}".getBytes());
this.webClient.perform(MockMvcRequestBuilders.fileUpload("/wine").file(jsonFile))
.andExpect(MockMvcResultMatchers.status().is(200))
.andExpect(MockMvcResultMatchers.jsonPath("$.name").value("Bordeaux"))
.andExpect(MockMvcResultMatchers.jsonPath("$.cost").value(10.55));
}
The error I get is:
我得到的错误是：
java.lang.AssertionError: No value for JSON path: $.name, exception: No results path for $['name']
I don't understand what it is not getting or what is missing.
我不明白它没有得到什么或缺少什么。
回答by Mathias Dpunkt
You are asserting that your response contains a field namewith value Bordeaux.
您断言您的响应包含一个name值为 value的字段Bordeaux。
You can print your response using this.webClient.perform(...).andDo(print()).
您可以使用 打印您的回复this.webClient.perform(...).andDo(print())。
回答by Nagesh Dalave
I was getting same problem.
我遇到了同样的问题。
Solution :
解决方案 ：
Use .andReturn().getResponse().getContentAsString();, your response will be a string. My response was:
使用.andReturn().getResponse().getContentAsString();，您的响应将是一个字符串。我的回答是：
{"url":null,"status":200,"data":{"id":1,"contractName":"Test contract"}
When I was trying to do .andExpect(jsonPath("$.id", is(1)));there was an error: java.lang.AssertionError: No value for JSON path: $.id
当我尝试这样做时.andExpect(jsonPath("$.id", is(1)));出现错误：java.lang.AssertionError: No value for JSON path: $.id
To fix it, I did .andExpect(jsonPath("$.data.id", is(1)));and it works because id is a field in data.
为了修复它，我做到了.andExpect(jsonPath("$.data.id", is(1)));并且它有效，因为 id 是数据中的一个字段。
回答by Marko Markovic
Most likely jsonPath interprets the body of your file as a list and this should do the trick (mind the added square brackets as list accessors):
最有可能的 jsonPath 将您的文件主体解释为一个列表，这应该可以解决问题（注意添加的方括号作为列表访问器）：
.andExpect(MockMvcResultMatchers.jsonPath("$[0].name").value("Bordeaux"))
.andExpect(MockMvcResultMatchers.jsonPath("$[0].cost").value(10.55));
回答by Yurii Malskiy
I had the same problem after adding Hymanson-dataformat-xmldependency to my project.
在向Hymanson-dataformat-xml我的项目添加依赖项后，我遇到了同样的问题。
To solve this i had to change my response entity from:
为了解决这个问题，我不得不改变我的响应实体：
return new ResponseEntity<>(body, HttpStatus.*STATUS*)
return new ResponseEntity<>(body, HttpStatus.*STATUS*)
to
到
return ResponseEntity.*status*().contentType(MediaType.APPLICATION_JSON).body(*your body*).
return ResponseEntity.*status*().contentType(MediaType.APPLICATION_JSON).body(*your body*).
In this way it will work fine, cause you've directly set the jsonas return type for your body.
这样它就可以正常工作，因为您已经直接json为您的身体设置了as 返回类型。
回答by Yurii Malskiy
Whatever you are testing for .namedoes not have a property called nameanymore the error message is pretty clear about that part.
无论您要测试什么，都.name不再有一个被调用的属性name，错误消息对该部分非常清楚。
java.lang.AssertionError: No value for JSON path: $.name, exception: No results path for $['name']
java.lang.AssertionError: No value for JSON path: $.name, exception: No results path for $['name']
No one but you knows what you changed to make it go from workingto not workingnothing you posted in your question can tell us that.
除了您之外，没有人知道您进行了哪些更改以使其从工作变为不工作，您在问题中发布的任何内容都无法告诉我们。
