ssm框架 ajax访问时415

spring3.*与spring4.*的jackson依赖不一样

• spring3.*

1. jackson-core-asl-1.9.11.jar
2. jackson-mapper-asl-1.9.11.jar

• spring4.*

1. jackson-annotations-2.4.0.jar
2. jackson-core-2.4.2.jar
3. jackson-databind-2.4.2.jar