放心 java.util.HashMap 无法转换为 class java.util.List
Rest Assured java.util.HashMap cannot be cast to class java.util.List
我正在开发 Rest assured 框架来自动化 API 测试。实际上我想以列表而不是对象的形式获得响应。因为我想为每个元素做断言。检查每个元素的数据完整性。我正在执行这段代码：
List<Category> categories = given().
headers(
"Authorization",
"Bearer key",
"Content-Type",
ContentType.JSON,
"Accept",
ContentType.JSON)
.when()
.get("/rest/V1/categories").then().extract().response().jsonPath().getList("", Category.class);
这是类别 Class:
public class Category {
private Long id = null;
private Long parent_id = null;
private String name = null;
private boolean is_active = true;
private int position = 0;
private int level = 0;
private int product_count = 0;
private ArrayList<Category> children_data = null;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getParent_id() {
return parent_id;
}
public void setParent_id(Long parent_id) {
this.parent_id = parent_id;
}
/**
**/
public Boolean getIs_active() {
return is_active;
}
public void setIs_active(Boolean is_active) {
this.is_active = is_active;
}
/**
**/
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
/**
**/
public int getProduct_count() {
return product_count;
}
public void setProduct_count(int product_count) {
this.product_count = product_count;
}
public int getLevel() {
return level;
}
public void setLevel(int level) {
this.level = level;
}
public int getPosition() {
return position;
}
public void setPosition(int position) {
this.position = position;
}
/**
**/
public List<Category> getChildren_data() {
return children_data;
}
public void setChildren_data(List<Category> children_data) {
this.children_data = children_data;
}
这是控制台日志：
java.lang.ClassCastException: class java.util.HashMap cannot be cast to class java.util.List (java.util.HashMap and java.util.List are in module java.base of loader 'bootstrap')
我的 Json 原始的：
{
"id": 2,
"parent_id": 1,
"name": "Default Category",
"is_active": true,
"position": 1,
"level": 1,
"product_count": 2046,
"children_data": [
{
"id": 38,
"parent_id": 2,
"name": "What's New",
"is_active": true,
"position": 1,
"level": 2,
"product_count": 0,
"children_data": []
},
{
"id": 20,
"parent_id": 2,
"name": "Women",
"is_active": true,
"position": 2,
"level": 2,
"product_count": 1012,
"children_data": [
{
"id": 21,
"parent_id": 20,
"name": "Tops",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 784,
"children_data": [
{
"id": 23,
"parent_id": 21,
"name": "Jackets",
"is_active": true,
"position": 1,
"level": 4,
"product_count": 186,
"children_data": []
},
{
"id": 24,
"parent_id": 21,
"name": "Hoodies & Sweatshirts",
"is_active": true,
"position": 2,
"level": 4,
"product_count": 182,
"children_data": []
},
{
"id": 25,
"parent_id": 21,
"name": "Tees",
"is_active": true,
"position": 3,
"level": 4,
"product_count": 192,
"children_data": []
},
{
"id": 26,
"parent_id": 21,
"name": "Bras & Tanks",
"is_active": true,
"position": 4,
"level": 4,
"product_count": 224,
"children_data": []
}
]
},
{
"id": 22,
"parent_id": 20,
"name": "Bottoms",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 228,
"children_data": [
{
"id": 27,
"parent_id": 22,
"name": "Pants",
"is_active": true,
"position": 1,
"level": 4,
"product_count": 91,
"children_data": []
},
{
"id": 28,
"parent_id": 22,
"name": "Shorts",
"is_active": true,
"position": 2,
"level": 4,
"product_count": 137,
"children_data": []
}
]
}
]
},
{
"id": 11,
"parent_id": 2,
"name": "Men",
"is_active": true,
"position": 3,
"level": 2,
"product_count": 982,
"children_data": [
{
"id": 12,
"parent_id": 11,
"name": "Tops",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 678,
"children_data": [
{
"id": 14,
"parent_id": 12,
"name": "Jackets",
"is_active": true,
"position": 1,
"level": 4,
"product_count": 176,
"children_data": []
},
{
"id": 15,
"parent_id": 12,
"name": "Hoodies & Sweatshirts",
"is_active": true,
"position": 2,
"level": 4,
"product_count": 208,
"children_data": []
},
{
"id": 16,
"parent_id": 12,
"name": "Tees",
"is_active": true,
"position": 3,
"level": 4,
"product_count": 192,
"children_data": []
},
{
"id": 17,
"parent_id": 12,
"name": "Tanks",
"is_active": true,
"position": 4,
"level": 4,
"product_count": 102,
"children_data": []
}
]
},
{
"id": 13,
"parent_id": 11,
"name": "Bottoms",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 304,
"children_data": [
{
"id": 18,
"parent_id": 13,
"name": "Pants",
"is_active": true,
"position": 1,
"level": 4,
"product_count": 156,
"children_data": []
},
{
"id": 19,
"parent_id": 13,
"name": "Shorts",
"is_active": true,
"position": 2,
"level": 4,
"product_count": 148,
"children_data": []
}
]
}
]
},
{
"id": 3,
"parent_id": 2,
"name": "Gear",
"is_active": true,
"position": 4,
"level": 2,
"product_count": 46,
"children_data": [
{
"id": 4,
"parent_id": 3,
"name": "Bags",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 14,
"children_data": []
},
{
"id": 5,
"parent_id": 3,
"name": "Fitness Equipment",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 23,
"children_data": []
},
{
"id": 6,
"parent_id": 3,
"name": "Watches",
"is_active": true,
"position": 3,
"level": 3,
"product_count": 9,
"children_data": []
}
]
},
{
"id": 9,
"parent_id": 2,
"name": "Training",
"is_active": true,
"position": 5,
"level": 2,
"product_count": 6,
"children_data": [
{
"id": 10,
"parent_id": 9,
"name": "Video Download",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 6,
"children_data": []
}
]
},
{
"id": 7,
"parent_id": 2,
"name": "Collections",
"is_active": false,
"position": 5,
"level": 2,
"product_count": 989,
"children_data": [
{
"id": 8,
"parent_id": 7,
"name": "New Luma Yoga Collection",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 347,
"children_data": []
},
{
"id": 34,
"parent_id": 7,
"name": "Erin Recommends",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 279,
"children_data": []
},
{
"id": 35,
"parent_id": 7,
"name": "Performance Fabrics",
"is_active": true,
"position": 3,
"level": 3,
"product_count": 310,
"children_data": []
},
{
"id": 36,
"parent_id": 7,
"name": "Eco Friendly",
"is_active": true,
"position": 4,
"level": 3,
"product_count": 247,
"children_data": []
},
{
"id": 39,
"parent_id": 7,
"name": "Performance Sportswear New",
"is_active": true,
"position": 5,
"level": 3,
"product_count": 0,
"children_data": []
},
{
"id": 40,
"parent_id": 7,
"name": "Eco Collection New",
"is_active": true,
"position": 6,
"level": 3,
"product_count": 0,
"children_data": []
}
]
},
{
"id": 29,
"parent_id": 2,
"name": "Promotions",
"is_active": false,
"position": 6,
"level": 2,
"product_count": 654,
"children_data": [
{
"id": 30,
"parent_id": 29,
"name": "Women Sale",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 224,
"children_data": []
},
{
"id": 31,
"parent_id": 29,
"name": "Men Sale",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 39,
"children_data": []
},
{
"id": 32,
"parent_id": 29,
"name": "Pants",
"is_active": true,
"position": 3,
"level": 3,
"product_count": 247,
"children_data": []
},
{
"id": 33,
"parent_id": 29,
"name": "Tees",
"is_active": true,
"position": 4,
"level": 3,
"product_count": 192,
"children_data": []
}
]
},
{
"id": 37,
"parent_id": 2,
"name": "Sale",
"is_active": true,
"position": 6,
"level": 2,
"product_count": 0,
"children_data": []
}
]
}
您想使用 getList() 方法获得 List<>，但您的 JSON 并非以 List 开头。而不是 getList 使用 getObject 并且它会起作用。 getObject() 将 JSON 映射到您选择的 POJO class。
反序列化JSON时，您可能会遇到以下问题
com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of dataentities.Category (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
您需要做的就是添加一个依赖项来告诉 Rest-Assured 您要使用哪个反序列化器。
我个人的选择是：
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.9</version>
</dependency>
编辑：
要将 JSON 反序列化为 POJO，您可以使用 getObject() 方法，如下所示：
Category category = jsonPath.getObject("", Category.class);
编辑：
您应该使 Category class 字段 public 或创建 setter 和 getter。否则会有例外。
在您的类别中class；
改变private ArrayList<Category> children_data = null;
到private List<Category> children_data = null;
并尝试执行；
.getList("children_data", Category.class);
这应该有效。
您可以使用 Gson 库将 json 响应转换为 POJO
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
</dependency>
然后使用此语句获取预期的类别数组。
Response response = given()
.headers("Authorization","Bearer key",
"Content-Type",ContentType.JSON,
"Accept",ContentType.JSON)
.get("/rest/V1/categories");
Category[] categories = new Gson().fromJson(response.getBody().asString(),Category[].class);
现在对类别断言，或者您可能需要一个列表，然后执行此操作，
List<Category> categoryList = Arrays.asList(categories);
我正在开发 Rest assured 框架来自动化 API 测试。实际上我想以列表而不是对象的形式获得响应。因为我想为每个元素做断言。检查每个元素的数据完整性。我正在执行这段代码：
List<Category> categories = given().
headers(
"Authorization",
"Bearer key",
"Content-Type",
ContentType.JSON,
"Accept",
ContentType.JSON)
.when()
.get("/rest/V1/categories").then().extract().response().jsonPath().getList("", Category.class);
这是类别 Class:
public class Category {
private Long id = null;
private Long parent_id = null;
private String name = null;
private boolean is_active = true;
private int position = 0;
private int level = 0;
private int product_count = 0;
private ArrayList<Category> children_data = null;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getParent_id() {
return parent_id;
}
public void setParent_id(Long parent_id) {
this.parent_id = parent_id;
}
/**
**/
public Boolean getIs_active() {
return is_active;
}
public void setIs_active(Boolean is_active) {
this.is_active = is_active;
}
/**
**/
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
/**
**/
public int getProduct_count() {
return product_count;
}
public void setProduct_count(int product_count) {
this.product_count = product_count;
}
public int getLevel() {
return level;
}
public void setLevel(int level) {
this.level = level;
}
public int getPosition() {
return position;
}
public void setPosition(int position) {
this.position = position;
}
/**
**/
public List<Category> getChildren_data() {
return children_data;
}
public void setChildren_data(List<Category> children_data) {
this.children_data = children_data;
}
这是控制台日志：
java.lang.ClassCastException: class java.util.HashMap cannot be cast to class java.util.List (java.util.HashMap and java.util.List are in module java.base of loader 'bootstrap')
我的 Json 原始的：
{
"id": 2,
"parent_id": 1,
"name": "Default Category",
"is_active": true,
"position": 1,
"level": 1,
"product_count": 2046,
"children_data": [
{
"id": 38,
"parent_id": 2,
"name": "What's New",
"is_active": true,
"position": 1,
"level": 2,
"product_count": 0,
"children_data": []
},
{
"id": 20,
"parent_id": 2,
"name": "Women",
"is_active": true,
"position": 2,
"level": 2,
"product_count": 1012,
"children_data": [
{
"id": 21,
"parent_id": 20,
"name": "Tops",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 784,
"children_data": [
{
"id": 23,
"parent_id": 21,
"name": "Jackets",
"is_active": true,
"position": 1,
"level": 4,
"product_count": 186,
"children_data": []
},
{
"id": 24,
"parent_id": 21,
"name": "Hoodies & Sweatshirts",
"is_active": true,
"position": 2,
"level": 4,
"product_count": 182,
"children_data": []
},
{
"id": 25,
"parent_id": 21,
"name": "Tees",
"is_active": true,
"position": 3,
"level": 4,
"product_count": 192,
"children_data": []
},
{
"id": 26,
"parent_id": 21,
"name": "Bras & Tanks",
"is_active": true,
"position": 4,
"level": 4,
"product_count": 224,
"children_data": []
}
]
},
{
"id": 22,
"parent_id": 20,
"name": "Bottoms",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 228,
"children_data": [
{
"id": 27,
"parent_id": 22,
"name": "Pants",
"is_active": true,
"position": 1,
"level": 4,
"product_count": 91,
"children_data": []
},
{
"id": 28,
"parent_id": 22,
"name": "Shorts",
"is_active": true,
"position": 2,
"level": 4,
"product_count": 137,
"children_data": []
}
]
}
]
},
{
"id": 11,
"parent_id": 2,
"name": "Men",
"is_active": true,
"position": 3,
"level": 2,
"product_count": 982,
"children_data": [
{
"id": 12,
"parent_id": 11,
"name": "Tops",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 678,
"children_data": [
{
"id": 14,
"parent_id": 12,
"name": "Jackets",
"is_active": true,
"position": 1,
"level": 4,
"product_count": 176,
"children_data": []
},
{
"id": 15,
"parent_id": 12,
"name": "Hoodies & Sweatshirts",
"is_active": true,
"position": 2,
"level": 4,
"product_count": 208,
"children_data": []
},
{
"id": 16,
"parent_id": 12,
"name": "Tees",
"is_active": true,
"position": 3,
"level": 4,
"product_count": 192,
"children_data": []
},
{
"id": 17,
"parent_id": 12,
"name": "Tanks",
"is_active": true,
"position": 4,
"level": 4,
"product_count": 102,
"children_data": []
}
]
},
{
"id": 13,
"parent_id": 11,
"name": "Bottoms",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 304,
"children_data": [
{
"id": 18,
"parent_id": 13,
"name": "Pants",
"is_active": true,
"position": 1,
"level": 4,
"product_count": 156,
"children_data": []
},
{
"id": 19,
"parent_id": 13,
"name": "Shorts",
"is_active": true,
"position": 2,
"level": 4,
"product_count": 148,
"children_data": []
}
]
}
]
},
{
"id": 3,
"parent_id": 2,
"name": "Gear",
"is_active": true,
"position": 4,
"level": 2,
"product_count": 46,
"children_data": [
{
"id": 4,
"parent_id": 3,
"name": "Bags",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 14,
"children_data": []
},
{
"id": 5,
"parent_id": 3,
"name": "Fitness Equipment",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 23,
"children_data": []
},
{
"id": 6,
"parent_id": 3,
"name": "Watches",
"is_active": true,
"position": 3,
"level": 3,
"product_count": 9,
"children_data": []
}
]
},
{
"id": 9,
"parent_id": 2,
"name": "Training",
"is_active": true,
"position": 5,
"level": 2,
"product_count": 6,
"children_data": [
{
"id": 10,
"parent_id": 9,
"name": "Video Download",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 6,
"children_data": []
}
]
},
{
"id": 7,
"parent_id": 2,
"name": "Collections",
"is_active": false,
"position": 5,
"level": 2,
"product_count": 989,
"children_data": [
{
"id": 8,
"parent_id": 7,
"name": "New Luma Yoga Collection",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 347,
"children_data": []
},
{
"id": 34,
"parent_id": 7,
"name": "Erin Recommends",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 279,
"children_data": []
},
{
"id": 35,
"parent_id": 7,
"name": "Performance Fabrics",
"is_active": true,
"position": 3,
"level": 3,
"product_count": 310,
"children_data": []
},
{
"id": 36,
"parent_id": 7,
"name": "Eco Friendly",
"is_active": true,
"position": 4,
"level": 3,
"product_count": 247,
"children_data": []
},
{
"id": 39,
"parent_id": 7,
"name": "Performance Sportswear New",
"is_active": true,
"position": 5,
"level": 3,
"product_count": 0,
"children_data": []
},
{
"id": 40,
"parent_id": 7,
"name": "Eco Collection New",
"is_active": true,
"position": 6,
"level": 3,
"product_count": 0,
"children_data": []
}
]
},
{
"id": 29,
"parent_id": 2,
"name": "Promotions",
"is_active": false,
"position": 6,
"level": 2,
"product_count": 654,
"children_data": [
{
"id": 30,
"parent_id": 29,
"name": "Women Sale",
"is_active": true,
"position": 1,
"level": 3,
"product_count": 224,
"children_data": []
},
{
"id": 31,
"parent_id": 29,
"name": "Men Sale",
"is_active": true,
"position": 2,
"level": 3,
"product_count": 39,
"children_data": []
},
{
"id": 32,
"parent_id": 29,
"name": "Pants",
"is_active": true,
"position": 3,
"level": 3,
"product_count": 247,
"children_data": []
},
{
"id": 33,
"parent_id": 29,
"name": "Tees",
"is_active": true,
"position": 4,
"level": 3,
"product_count": 192,
"children_data": []
}
]
},
{
"id": 37,
"parent_id": 2,
"name": "Sale",
"is_active": true,
"position": 6,
"level": 2,
"product_count": 0,
"children_data": []
}
]
}
您想使用 getList() 方法获得 List<>，但您的 JSON 并非以 List 开头。而不是 getList 使用 getObject 并且它会起作用。 getObject() 将 JSON 映射到您选择的 POJO class。
反序列化JSON时，您可能会遇到以下问题
com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of dataentities.Category (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
您需要做的就是添加一个依赖项来告诉 Rest-Assured 您要使用哪个反序列化器。 我个人的选择是：
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.9</version>
</dependency>
编辑：
要将 JSON 反序列化为 POJO，您可以使用 getObject() 方法，如下所示：
Category category = jsonPath.getObject("", Category.class);
编辑：
您应该使 Category class 字段 public 或创建 setter 和 getter。否则会有例外。
在您的类别中class；
改变private ArrayList<Category> children_data = null;
到private List<Category> children_data = null;
并尝试执行；
.getList("children_data", Category.class);
这应该有效。
您可以使用 Gson 库将 json 响应转换为 POJO
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
</dependency>
然后使用此语句获取预期的类别数组。
Response response = given()
.headers("Authorization","Bearer key",
"Content-Type",ContentType.JSON,
"Accept",ContentType.JSON)
.get("/rest/V1/categories");
Category[] categories = new Gson().fromJson(response.getBody().asString(),Category[].class);
现在对类别断言，或者您可能需要一个列表，然后执行此操作，
List<Category> categoryList = Arrays.asList(categories);