Convert JSON string to List

1.JSON字符串
        String content = "[{" +
            "    \"key\": \"UserRole\"," +
            "    \"name\": \"员工角色\"" +
            "}, {" +
            "   \"key\": \"RolePermission\"," +
            "   \"name\": \"角色权限\"" +
            "}]";

2. Mapping entities

public class PermissionContent implements Serializable {
    private static final long serialVersionUID = 8891095994295070691L;
    private String key;
    private String name;

}

3. Use ObjectMapper

        ObjectMapper mapper = new ObjectMapper();
        CollectionType listType = mapper.getTypeFactory().constructCollectionType(ArrayList.class, PermissionContent.class);
        List<PermissionContent> userList = mapper.readValue(content, listType);
        System.out.println(userList.get(0).getKey());