java解析json复杂数据的第三种思路
文章目录
- 一、概述
- 二、数据预览
-
- 1. 接口json数据
- 2. json转xml数据
- 三、代码实现
-
- 1. pom.xml
- 2. 核心代码
- 3. 运行结果
- 四、源码传送
一、概述
接上篇 java解析json复杂数据的两种思路
我们已经通过解析返回json字符串得到数据,现在改变思路, 按照如下流程获取数据:
接口API获取JSON
JSON转XML
dom4j使用XPath解析xml
二、数据预览
1. 接口json数据
https://blog.csdn.net/community/home-api/v1/get-business-list?page=1&size=5&businessType=blog&username=qq_16127313
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2. json转xml数据
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三、代码实现
1. pom.xml
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webfluxartifactId>
<version>5.2.3.RELEASEversion>
dependency>
<dependency>
<groupId>io.projectreactor.nettygroupId>
<artifactId>reactor-nettyartifactId>
<version>0.9.4.RELEASEversion>
dependency>
<dependency>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-slf4j-implartifactId>
<version>2.12.1version>
dependency>
<dependency>
<groupId>org.apache.commonsgroupId>
<artifactId>commons-lang3artifactId>
<version>3.10version>
dependency>
<dependency>
<groupId>commons-iogroupId>
<artifactId>commons-ioartifactId>
<version>2.5version>
dependency>
<dependency>
<groupId>com.fasterxml.jackson.dataformatgroupId>
<artifactId>jackson-dataformat-xmlartifactId>
<version>2.10.2version>
dependency>
<dependency>
<groupId>org.dom4jgroupId>
<artifactId>dom4jartifactId>
<version>2.1.4version>
dependency>
<dependency>
<groupId>jaxengroupId>
<artifactId>jaxenartifactId>
<version>2.0.0version>
dependency>
<dependency>
<groupId>org.junit.jupitergroupId>
<artifactId>junit-jupiter-apiartifactId>
<version>5.5.2version>
<scope>testscope>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>1.18.12version>
<scope>providedscope>
dependency>
2. 核心代码
package com.fly.xml;
import java.io.IOException;
import java.io.StringReader;
import java.nio.charset.StandardCharsets;
import org.apache.commons.io.IOUtils;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.io.SAXReader;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.http.MediaType;
import org.springframework.web.reactive.function.client.WebClient;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.json.JsonMapper;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public class XmlTest
{
static JsonMapper jsonMapper = new JsonMapper();
static XmlMapper xmlMapper = new XmlMapper();
static WebClient webClient = WebClient.builder().codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(-1)).build();
@Test
public void testApi()
throws IOException, DocumentException
{
//WebClient同步调用
String url = "https://blog.csdn.net/community/home-api/v1/get-business-list?page=1&size=5&businessType=blog&username=qq_16127313";
String jsonText = webClient.get().uri(url).acceptCharset(StandardCharsets.UTF_8).accept(MediaType.APPLICATION_JSON).retrieve().bodyToMono(String.class).block();
//json转xml
JsonNode jsonNode = jsonMapper.readTree(jsonText);
String xml = xmlMapper.writeValueAsString(jsonNode);
// dom4j、XPath
Document doc = new SAXReader().read(new StringReader(xml));
doc.selectNodes("//data/list/url").stream().forEach(n -> log.info(n.getStringValue()));
doc.selectNodes("//data/list/viewCount").stream().forEach(n -> log.info(n.getStringValue()));
}
}
3. 运行结果
四、源码传送
https://gitee.com/00fly/effict-side/blob/master/springboot-cache/src/test/java/com/fly/test/restful/json/ParseJson.java
大家可以根据需要选择方案，有任何问题和建议，都可以向我提问讨论,大家一起进步，谢谢!
-over-