jackson json轉對象 json轉集合 對大小寫支持

    @JsonAutoDetect(fieldVisibility = Visibility.ANY, getterVisibility = Visibility.NONE, isGetterVisibility = Visibility.NONE)
    public static class XnServiceGetUserTest {
        @NotEmpty(message = "票據憑證不能為空")
        private String Token;

        @NotEmpty(message = "用戶號不能為空")
        private String PERNR;

        @NotEmpty(message = "操作類型不能為空")
        private String OPTYPE = "QRY";

        public String getToken() {
            return Token;
        }

        public void setToken(String token) {
            Token = token;
        }

        public String getPERNR() {
            return PERNR;
        }

        public void setPERNR(String pERNR) {
            PERNR = pERNR;
        }

        public String getOPTYPE() {
            return OPTYPE;
        }

        public void setOPTYPE(String oPTYPE) {
            OPTYPE = oPTYPE;
        }

    }

 

 

 

-----------json轉對象和對象轉json

 

    public static void main(String[] args) throws Exception {
        String json = "{\"OPTYPE\":\"QRY\",\"Token\":\"cRQENwe3AYNpTlz7e0dxag==\",\"PERNR\":\"aaa\"}";
        ObjectMapper mapper = new ObjectMapper();
　　　　 //json轉對象
        XnServiceGetUserTest xnServiceGetUserTest = mapper.readValue(json, XnServiceGetUserTest.class);

        System.out.println(xnServiceGetUserTest.OPTYPE);
        System.out.println(xnServiceGetUserTest.PERNR);
        System.out.println(xnServiceGetUserTest.Token);
　　　　 //對象轉json
        System.out.println(mapper.writeValueAsString(xnServiceGetUserTest));

    }

 

-------------json集合 轉對象

    public static void main(String[] args) throws Exception {

        Aaw aaw = new Aaw();
        List a = new ArrayList();
        a.add(aaw);
        aaw.setWocao("xxx");
        a.add(aaw);

        System.out.println(objectMapper.writeValueAsString(a));

        List<Aaw> bb = objectMapper.readValue("[{\"nn\":null,\"wocao\":\"xxx\"},{\"nn\":null,\"wocao\":\"xxx\"}]",
                new TypeReference<List<Aaw>>() {
                });

        System.out.println(bb);

    }

 

注意:@JsonAutoDetect(fieldVisibility = Visibility.ANY, getterVisibility = Visibility.NONE, isGetterVisibility = Visibility.NONE)
這個是用於設置屬性的自動發現，這樣就可以支持大小寫，避免多生成小寫。另外如果java屬性名未按照規范命名，如：aaa_aa，可用該注解來直接讀取屬性生成json。