请根据如下JSON生成一个java对象： { "reportDate": "2023-07-18", "apiName": "GetNodeParents", "apiClass": "运维中心", "apiLevel": 1, "invokeTotal": 2770, "monthTotal": 11804, "tenantId": 341813625595970, "apiClassEn": "Operation Center", "userId": "251827572104750083", "failInvokeTotal": 0, "monthFailTotal": 43 }]

你可以使用以下代码来生成一个相应的Java对象：

import com.fasterxml.jackson.annotation.JsonProperty;
import java.util.Date;

public class ApiReport {
    @JsonProperty("reportDate")
    private Date reportDate;
    
    @JsonProperty("apiName")
    private String apiName;
    
    @JsonProperty("apiClass")
    private String apiClass;
    
    @JsonProperty("apiLevel")
    private int apiLevel;
    
    @JsonProperty("invokeTotal")
    private int invokeTotal;
    
    @JsonProperty("monthTotal")
    private int monthTotal;
    
    @JsonProperty("tenantId")
    private long tenantId;
    
    @JsonProperty("apiClassEn")
    private String apiClassEn;
    
    @JsonProperty("userId")
    private String userId;
    
    @JsonProperty("failInvokeTotal")
    private int failInvokeTotal;
    
    @JsonProperty("monthFailTotal")
    private int monthFailTotal;

    // Getters and setters
}

然后，你可以使用Jackson库将JSON字符串转换为Java对象。示例代码如下：

import com.fasterxml.jackson.databind.ObjectMapper;

public class Main {
    public static void main(String[] args) throws Exception {
        String json = "{\"reportDate\":\"2023-07-18\",\"apiName\":\"GetNodeParents\",\"apiClass\":\"运维中心\",\"apiLevel\":1,\"invokeTotal\":2770,\"monthTotal\":11804,\"tenantId\":341813625595970,\"apiClassEn\":\"Operation Center\",\"userId\":\"251827572104750083\",\"failInvokeTotal\":0,\"monthFailTotal\":43}";

        ObjectMapper objectMapper = new ObjectMapper();
        ApiReport apiReport = objectMapper.readValue(json, ApiReport.class);

        System.out.println(apiReport.getApiName());
        System.out.println(apiReport.getApiLevel());
        // ...
    }
}

这个代码将打印出相应的属性值。你可以根据需求使用对象中的属性。请确保你已经添加了Jackson库的依赖。