問題：com.alibaba.fastjson.JSONException: syntax error, pos 1
at com.alibaba.fastjson.parser.DefaultJSONParser.parse(DefaultJSONParser.java:1346) ~[fastjson-1.2.9.jar:?]
at com.alibaba.fastjson.parser.DefaultJSONParser.parse(DefaultJSONParser.java:1253) ~[fastjson-1.2.9.jar:?]
at com.alibaba.fastjson.JSON.parse(JSON.java:109) ~[fastjson-1.2.9.jar:?]
at com.alibaba.fastjson.JSON.parse(JSON.java:100) ~[fastjson-1.2.9.jar:?]
at com.alibaba.fastjson.JSON.parseObject(JSON.java:171) ~[fastjson-1.2.9.jar:?]
at sun.reflect.GeneratedMethodAccessor39.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_191]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_191]
at bsh.Reflect.invokeMethod(Reflect.java:131) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.Reflect.invokeStaticMethod(Reflect.java:95) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.Name.invokeMethod(Name.java:868) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHMethodInvocation.eval(BSHMethodInvocation.java:69) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHPrimaryExpression.eval(BSHPrimaryExpression.java:96) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHPrimaryExpression.eval(BSHPrimaryExpression.java:41) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHVariableDeclarator.eval(BSHVariableDeclarator.java:80) ~[bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHTypedVariableDeclaration.eval(BSHTypedVariableDeclaration.java:78) ~[bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHBlock.evalBlock(BSHBlock.java:125) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHBlock.eval(BSHBlock.java:75) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHBlock.eval(BSHBlock.java:41) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHTryStatement.eval(BSHTryStatement.java:80) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHBlock.evalBlock(BSHBlock.java:125) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHBlock.eval(BSHBlock.java:75) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHBlock.eval(BSHBlock.java:41) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.BSHIfStatement.eval(BSHIfStatement.java:45) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.Interpreter.eval(Interpreter.java:659) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.Interpreter.eval(Interpreter.java:750) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at bsh.Interpreter.eval(Interpreter.java:739) [bsh-2.0b6.jar:2.0b6 2016-02-05 05:16:19]
at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_191]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_191]
at org.apache.jmeter.util.BeanShellInterpreter.bshInvoke(BeanShellInterpreter.java:163) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jmeter.util.BeanShellInterpreter.eval(BeanShellInterpreter.java:186) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jmeter.util.BeanShellTestElement.processFileOrScript(BeanShellTestElement.java:151) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jmeter.extractor.BeanShellPostProcessor.process(BeanShellPostProcessor.java:66) [ApacheJMeter_components.jar:5.1.1 r1855137]
at org.apache.jmeter.threads.JMeterThread.runPostProcessors(JMeterThread.java:925) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:564) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:486) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:253) [ApacheJMeter_core.jar:5.1.1 r1855137]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
2019-07-10 09:51:00,579 ERROR o.a.j.u.BeanShellInterpreter: Error invoking bsh method: eval Sourced file: inline evaluation of: ``import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; import com.alibaba . . . '' : TargetError
2019-07-10 09:51:00,579 WARN o.a.j.e.BeanShellPostProcessor: Problem in BeanShell script: org.apache.jorphan.util.JMeterException: Error invoking bsh method: eval Sourced file: inline evaluation of: ``import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; import com.alibaba . . . '' : TargetError
解決：傳入字符串Result爲空，加個result判空