jackson简单实用

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public class jackson {
@Test
public void text(){
Product p1 = new Product();
p1.setId(1);
p1.setName("电视机");
p1.setPrice(2000);
p1.setRelease(new Date());
Product p2 = new Product();
p2.setId(2);
p2.setName("电冰箱");
p2.setPrice(3000);
p2.setRelease(new Date());
List<Product> list = new ArrayList<Product>();
list.add(p1);
list.add(p2);
try {
//转成json
ObjectMapper mapper= new ObjectMapper();
//处理日期类型
mapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd"));
//处理过滤属性
FilterProvider fp = new SimpleFilterProvider().addFilter("productFilter"
, SimpleBeanPropertyFilter.serializeAllExcept("id","name")); mapper.setFilters(fp); String json = mapper.writeValueAsString(list); System.out.println(json);

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//下面注解是过滤属性,可以选择某个功能过滤掉什么属性
@JsonFilter("productFilter")

//下面注解适用所有功能都过滤掉id和release
//@JsonIgnoreProperties({"release","id"})
public class Product {
//@JsonIgnore
private int id ;
private String name;
private double price;
//@JsonIgnore
private Date release;