【WebMagic】解析获取JSON数据

WebMagic为我们提供了JsonPathSelector用来提取JSON数据，具体用法参见下方的Demo 。

package com.born2do.code;

import us.codecraft.webmagic.selector.JsonPathSelector;

/**
 * @author chenhy
 * @date 2021/3/27
 */
public class WebMagicDemo01 {

    public static void main(String[] args) {
        String json = "{\"mode\":\"xml\",\"code\":\"        <dependency>\\n            <groupId>org.springframework.boot</groupId>\\n            <artifactId>spring-boot-configuration-processor</artifactId>\\n            <optional>true</optional>\\n        </dependency>\\n\\n\\n <build>\\n        <plugins>\\n            <plugin>\\n                <groupId>org.springframework.boot</groupId>\\n                <artifactId>spring-boot-maven-plugin</artifactId>\\n                <configuration>\\n                    <excludes>\\n                        <exclude>\\n                            <groupId>org.springframework.boot</groupId>\\n                            <artifactId>spring-boot-configuration-processor</artifactId>\\n                        </exclude>\\n                    </excludes>\\n                </configuration>\\n            </plugin>\\n        </plugins>\\n    </build>\",\"heightLimit\":true,\"margin\":true,\"id\":\"Wptpj\"}\n";
        System.out.println("原JSON数据：\n" + json);
        // 构造函数中的参数jsonPathStr为匹配规则
        JsonPathSelector jsonPathSelector = new JsonPathSelector("$.code");
        System.out.println("获取到的JSON数据中code的属性值：\n" + jsonPathSelector.select(json));
    }

}

运行结果：

原JSON数据：
{"mode":"xml","code":"        <dependency>\n            <groupId>org.springframework.boot</groupId>\n            <artifactId>spring-boot-configuration-processor</artifactId>\n            <optional>true</optional>\n        </dependency>\n\n\n <build>\n        <plugins>\n            <plugin>\n                <groupId>org.springframework.boot</groupId>\n                <artifactId>spring-boot-maven-plugin</artifactId>\n                <configuration>\n                    <excludes>\n                        <exclude>\n                            <groupId>org.springframework.boot</groupId>\n                            <artifactId>spring-boot-configuration-processor</artifactId>\n                        </exclude>\n                    </excludes>\n                </configuration>\n            </plugin>\n        </plugins>\n    </build>","heightLimit":true,"margin":true,"id":"Wptpj"}

获取到的JSON数据中code的属性值：
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-configuration-processor</artifactId>
	<optional>true</optional>
</dependency>


<build>
	<plugins>
		<plugin>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-maven-plugin</artifactId>
			<configuration>
				<excludes>
					<exclude>
						<groupId>org.springframework.boot</groupId>
						<artifactId>spring-boot-configuration-processor</artifactId>
					</exclude>
				</excludes>
			</configuration>
		</plugin>
	</plugins>
</build>