# shangting-lease

**Repository Path**: javaStudy_2026/shangting-lease

## Basic Information

- **Project Name**: shangting-lease
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: MulanPSL-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-06-14
- **Last Updated**: 2026-06-16

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

```
[remote "origin"]
	url = https://gitee.com/vuejs-study/shangting-lease.git
	fetch = +refs/heads/*:refs/remotes/origin/*


[remote "gitee"]
	url = git@gitee.com:byd2025/shangting-lease.git
	# url = https://gitee.com/byd2025/shangting-lease.git
	fetch = +refs/heads/*:refs/remotes/gitee/*

[remote "aliyun"]
	url = ssh://git@172.16.10.111:22022/gitdata/atguigu/shangting-lease.git 
	fetch = +refs/heads/*:refs/remotes/aliyun/*
	
# [remote "gogs"]
# 	url = http://192.168.8.17:10080/EBO-ASP/shangting-lease.git
# 	fetch = +refs/heads/*:refs/remotes/gogs/*




```


```

sudo mkdir -p  /gitdata/atguigu/shangting-lease.git
cd /gitdata/atguigu 
git init --bare shangting-lease.git/
sudo chown -R git:git shangting-lease.git/ 
此时的git地址 :  ssh://git@172.16.10.111:22022/gitdata/atguigu/shangting-lease.git
git clone ssh://git@172.16.10.111:22022/gitdata/atguigu/shangting-lease.git


git remote add aliyun ssh://git@172.16.10.111:22022/gitdata/atguigu/shangting-lease.git


mkdir shangting-lease
cd shangting-lease

git init 
git add .
git commit -m "first commit"
git remote add origin git@gitee.com:javaStudy_2026/shangting-lease.git
git push -u origin "master"





```

静态方法
```java
@Component
public class JsonUtil {

    private static ObjectMapper MAPPER;

    @Autowired
    public void setMapper(ObjectMapper objectMapper) {
        MAPPER = objectMapper;
    }
}

@Bean
public ObjectMapper objectMapper() {
    ObjectMapper mapper = new ObjectMapper();
    mapper.registerModule(new JavaTimeModule());
    mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
    return mapper;
}
```


# maven 

## json
```xml

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-json</artifactId>
</dependency>

<!-- json 序列化与反序列化 -->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <scope>compile</scope>
</dependency>

<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jsr310</artifactId>
    <scope>compile</scope>
</dependency>
```

```java
// 方式1：Bean 配置（推荐，统一管理）
mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

// 方式2：application.yml（无需改代码）
spring:
  jackson:
    deserialization:
      fail-on-unknown-properties: false

// 方式3：实体类注解（只对该类生效，精细控制）
@JsonIgnoreProperties(ignoreUnknown = true)
public class PaymentType { ... }


@Configuration
public class JacksonConfig {

    @Bean
    public ObjectMapper objectMapper() {

        ObjectMapper mapper = new ObjectMapper();

        // =========================
        // 1. Java 8 时间
        // =========================
        mapper.registerModule(new JavaTimeModule());
        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

        // =========================
        // 2. 忽略未知字段（兼容前端）
        // =========================
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

        // =========================
        // 3. null 不返回（接口更干净）
        // =========================
        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);

        // =========================
        // 4. 空对象不报错
        // =========================
        mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);

        // =========================
        // 5. Long → String（前端安全）
        // =========================
        SimpleModule module = new SimpleModule();
        module.addSerializer(Long.class, ToStringSerializer.instance);
        module.addSerializer(Long.TYPE, ToStringSerializer.instance);

        mapper.registerModule(module);

        return mapper;
    }
}
```