java.lang.NoClasjava.lang.NoClassDefFoundError: com/fasterxml/jackson/core/Json

java.lang.NoClasjava.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonProcessingException异常解决方案：
在pom.xml中添加依赖：

<dependency>  
                <groupId>com.fasterxml.jackson.core</groupId>  
                <artifactId>jackson-core</artifactId>  
                <version>2.1.0</version>  
            </dependency>  
            <dependency>  
                <groupId>com.fasterxml.jackson.core</groupId>  
                <artifactId>jackson-databind</artifactId>  
                <version>2.1.0</version>  
            </dependency>  
            <dependency>  
                <groupId>com.fasterxml.jackson.core</groupId>  
                <artifactId>jackson-annotations</artifactId>  
                <version>2.1.0</version>  
</dependency>