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  • list集合转换成json类型

    public String gettext(HttpServletRequest request,HttpServletResponse response){
            List<xuanhuan_> xuanhuan = service.getxuanhuan();
            JSONArray json = JSONArray.fromObject(xuanhuan);
            System.out.println(json);//在这里可以看到,json类型可以直接打印出来
            return "/index";
        }

    打印结果:

    [{"content":"","id":0,"name":"《测试》1","shijian":null},{"content":"","id":0,"name":"《测试》2","shijian":null},{"content":"","id":0,"name":"《测试》3","shijian":null},{"content":"","id":0,"name":"《测试》4","shijian":null},{"content":"","id":0,"name":"《测试》5","shijian":null},null,null,null]

    下载是maven引入json的包:

            <!-- json的包,不是项目自带的 -->
            
            <dependency>
                <groupId>net.sf.json-lib</groupId>
                <artifactId>json-lib</artifactId>
                <version>2.4</version>
                <classifier>jdk15</classifier>
            </dependency>
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  • 原文地址:https://www.cnblogs.com/suiyisuixing/p/7356745.html
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