JSONArray jsonArray = JSONArray.fromObject (arrayStr);

解决方案

导包依赖

import net.sf.json.JSONObject;

		<!-- JSONObject对象依赖的jar包 -->  <dependency>  <groupId>commons-beanutils</groupId>  <artifactId>commons-beanutils</artifactId>  <version>1.9.3</version>  </dependency>  <dependency>  <groupId>commons-collections</groupId>  <artifactId>commons-collections</artifactId>  <version>3.2.1</version>  </dependency>  <dependency>  <groupId>commons-lang</groupId>  <artifactId>commons-lang</artifactId>  <version>2.6</version>  </dependency>  <dependency>  <groupId>commons-logging</groupId>  <artifactId>commons-logging</artifactId>  <version>1.1.1</version>  </dependency>  <dependency>  <groupId>net.sf.ezmorph</groupId>  <artifactId>ezmorph</artifactId>  <version>1.0.6</version>  </dependency>  <dependency>  <groupId>net.sf.json-lib</groupId>  <artifactId>json-lib</artifactId>  <version>2.4</version>  <classifier>jdk15</classifier><!-- 指定jdk版本（一定要有） -->  </dependency>

问题解决