添加，删除List<Map<String, Object>>元素

添加

       //初始化
        List<Map<String, Object>> products = new ArrayList<Map<String,Object>>();
        //也可以这样初始化List<Map<String, Object>> products = null

        //初始Map<String,Object>
        Map<String,Object> product01 = null;
        product01.put("Parameter01", "Key1");        

        Map<String,Object> product02 = null;
        String parameter02 = "Parameter02";
        String key2 = "theContentOfKey2";
        product02.put(parameter02, key2);

        //一个一个添加
        products.add(product01);
        products.add(product02);

        //从Service中获取
        List<Map<String, Object>> productsAddition = productService.getProduct(); 

        //遍历添加
        for(Map<String, Object> product: productsAddition){
            products.add(product);
        }

删除--使用迭代删除

          //初始化
         List<Map<String, Object>> products =  null;

         //获取List元素
         products = productService.getProduct(); 

         //使用迭代删除
         Iterator<Map<String, Object>> productsIterator = products.iterator();
         while (productsIterator.hasNext()) {
           //删除特定元素
           Map<String, Object> product = productsIterator.next();
           if("product01".equals(product.get("productName"))){
                  productsIterator.remove();
           }
           if("product02".equals(product.get("productName"))){
                productsIterator.remove();
           }

        }

原文地址：https://www.cnblogs.com/Jomini/p/9595446.html