java - Jackson库的ObjectMapper类在was6环境上找不到部分方法

Question

本地也是was6环境 可以正确运行， 发布到测试环境后，ObjectMapper类 报错找不到部分方法，我用反射打印方法和对应参数，结果，环境上比本地 要少输出10多个方法，百思不得其解。。。用的是这个版本jackson-all-1.9.11.jar

Answer 1

It is recommended to carefully compare the differences in jar packages in the two environments to see if there are other versions of json packages and whether there are conflicts

Answer 2

Try this maven configuration.

 <dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.5.0</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>2.5.0</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.5.0</version>
</dependency>