添加,删除List<Map<String, Object>>元素
这里讲对List<Map<String, Object>>的数据结构的添加和删除实例
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(); } }
---------- 谢谢大佬打赏-----------