Merge remote-tracking branch 'origin/master'

puzhibing

2023-02-24 39c58fe1a0469b99bd5ef0a24f6b254693826a18

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
package com.stylefeng.guns.modular.system.controller.util;
 
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
 
import java.io.IOException;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
 
@Component
public final class WxJsonUtils {
 
    private Logger log = LoggerFactory.getLogger(this.getClass());
 
    public static final String dateFormat = "yyyy-MM-dd";
    public static final String dateTimeFormat = "yyyy-MM-dd HH:mm:ss";
    private static final ObjectMapper OM = new ObjectMapper();
    private static final JavaTimeModule timeModule = new JavaTimeModule();
 
    /**
     * 转换LocalDateTime
     */
    static class LocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
        @Override
        public void serialize(LocalDateTime localDateTime, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
            jsonGenerator.writeString(localDateTime.format(DateTimeFormatter.ofPattern(dateTimeFormat)));
        }
    }
 
    /**
     * 转换LocalDate
     */
    static class LocalDateSerializer extends JsonSerializer<LocalDate> {
        @Override
        public void serialize(LocalDate localDate, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
            jsonGenerator.writeString(localDate.format(DateTimeFormatter.ofPattern(dateFormat)));
        }
    }
 
    /**
     * 设置 ObjectMapper
     *
     * @return
     */
    private ObjectMapper getObjectMapper() {
        // 序列化
        timeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer());
        timeModule.addSerializer(LocalDate.class, new LocalDateSerializer());
        // 反序列化
        timeModule.addDeserializer(LocalDateTime.class,
                new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(dateTimeFormat)));
        timeModule.addDeserializer(LocalDate.class,
                new LocalDateDeserializer(DateTimeFormatter.ofPattern(dateFormat)));
        // 允许对象忽略json中不存在的属性
        OM.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        OM.registerModule(timeModule);
        return OM;
    }
 
    /**
     * 将对象序列化
     */
    public <T> String toJsonString(T obj) {
        try {
            ObjectMapper om = getObjectMapper();
            return om.writeValueAsString(obj);
        } catch (JsonProcessingException e) {
            log.error("转json字符串失败：{}", obj);
            return null;
        }
    }
 
    /**
     * 反序列化对象字符串
     */
    public <T> T parseObject(String json, Class<T> clazz) {
        try {
            ObjectMapper om = getObjectMapper();
            return om.readValue(json, clazz);
        } catch (IOException e) {
            throw new RuntimeException("反序列化对象字符串失败");
        }
    }
 
    /**
     * 反序列化字符串成为对象
     */
    public <T> T parseObject(String json, TypeReference<T> valueTypeRef) {
        try {
            ObjectMapper om = getObjectMapper();
            return om.readValue(json, valueTypeRef);
        } catch (IOException e) {
            throw new RuntimeException("反序列化字符串成为对象失败");
        }
    }
 
}