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4lqedz 发表于 2024-10-10 04:29:14

Fastjson2怎么样进行JSON的解析和对象序列化？

    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Fastjson2是Fastjson项目的升级版，是一个高性能的JSON处理库。</p>
    <h1 style="color: black; text-align: left; margin-bottom: 10px;">引入Fastjson2依赖</h1>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在pom文件中引入Fastjson2依赖。</p><span style="color: black;">&lt;<span style="color: black;">dependency</span>&gt;</span>
    <span style="color: black;">&lt;<span style="color: black;">groupId</span>&gt;</span>com.alibaba.fastjson2<span style="color: black;">&lt;/<span style="color: black;">groupId</span>&gt;</span>
    <span style="color: black;">&lt;<span style="color: black;">artifactId</span>&gt;</span>fastjson2<span style="color: black;">&lt;/<span style="color: black;">artifactId</span>&gt;</span>
    <span style="color: black;">&lt;<span style="color: black;">version</span>&gt;</span>2.0.27<span style="color: black;">&lt;/<span style="color: black;">version</span>&gt;</span>
    <span style="color: black;">&lt;/<span style="color: black;">dependency</span>&gt;</span>
    <h1 style="color: black; text-align: left; margin-bottom: 10px;">解析JSON为JAVA对象</h1>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">运用</span>JSON.parseObject<span style="color: black;">办法</span>将JSON串解析为JAVA对象。</p>String json = <span style="color: black;">"{\"userId\":\"1\",\"username\":\"admin\"}"</span>;
    User user = JSON.parseObject(json, User<span style="color: black;">.<span style="color: black;">class</span>);</span>
    <h1 style="color: black; text-align: left; margin-bottom: 10px;">将JAVA对象序列化为JSON字符串</h1>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">运用</span>JSON.toJSONString<span style="color: black;">办法</span>，将JAVA对象序列化为JSON串。</p><span style="color: black;">String</span> jsonString = <span style="color: black;">JSON</span>.toJSONString(user);<h1 style="color: black; text-align: left; margin-bottom: 10px;">解析JSON为JSONObject对象</h1><span style="color: black;">String</span> json = <span style="color: black;">"{\"userId\":\"1\",\"username\":\"admin\"}"</span>;
    JSONObject object = <span style="color: black;">JSON</span>.parseObject(json);<h1 style="color: black; text-align: left; margin-bottom: 10px;">解析JSON为JSONArray对象</h1><span style="color: black;">String</span> jsonArray = <span style="color: black;">"[{\"userId\":\"1\",\"username\":\"admin\"},{\"userId\":\"2\",\"username\":\"user\"}]"</span>;
    JSONArray array = <span style="color: black;">JSON</span>.parseArray(jsonArray);

j8typz 发表于 7 天前

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