getPayloadJSON 返回一个空对象 [英] getPayloadJSON returning an empty object

问题描述

我正在做一些非常简单的脚本中介作为测试，看看我是否可以更改我的服务器返回的有效负载.

I am doing some very simple script mediation as a test to see if I can change the payload being returned by my server.

我的无中介payload如下:

My unmediated payload comes out as:

{"origin":"202.37.75.130"}

然后我尝试做一个非常简单的检查，看看有效载荷的 get 和 set 是否工作:

Then I try doing a very simple check to see whether get and set work for payloads:

<script language="js">
    var older = mc.getPayloadJSON(); 
    var newer=older; 
    mc.setPayloadJSON(newer);           
</script> 

我的结果是:

{"jsonObject":""}

我已经完成了测试，表明 setPayloadJSON() 有效，这意味着我的 getPayloadJSON 必须返回一个空对象.

I have done testing that shows that setPayloadJSON() works, which means that my getPayloadJSON must be returning an empty object.

查看日志文件显示:

ERROR {org.apache.synapse.mediators.bsf.ScriptMessageContext} -  JSON object is null. {org.apache.synapse.mediators.bsf.ScriptMessageContext}

还有其他人遇到这个错误吗?

Is there anyone else having this error?

推荐答案

以防万一有人遇到同样的问题，我设法让我的工作正常工作.

Just in case someone has the same issue, I managed to get mine working.

我不得不采取一种解决方法:

I had to do a workaround method:

1. 在脚本中介之前使用属性中介来设置属性:

属性名称="JSONPayload"表达式="json-eval($.)"

property name="JSONPayload" expression="json-eval($.)"

1. 在脚本中介中，通过执行以下操作获取有效负载(作为字符串):

var pl_string = mc.getProperty("JSONPayload");

var pl_string = mc.getProperty("JSONPayload");

1. 现在必须将字符串转换为 JS 对象:

var pl = JSON.parse(pl_string);

var pl = JSON.parse(pl_string);

1. 像使用 getPayloadJSON() 获取负载一样操作负载.

1. Manipulate the payload as if you'd obtained it using getPayloadJSON().

我知道这是一种混搭的方法，但其他方法都不适合我，所以我尝试了这个方法.

I know it's a hacked together method, but none of the other ways were working for me so I tried this one.

一些信息，以防有人想调试它:

Some information in case anyone wants to debug it:

我使用的是 API 管理器 1.7.

I'm using API Manager 1.7.

我将消息构建器和格式化器设置为:生成器类 = "org.apache.synapse.commons.json.JsonStreamBuilder"格式化程序类 = "org.apache.synapse.commons.json.JsonStreamFormatter"

I set the message builders and formatters to these: Builder class = "org.apache.synapse.commons.json.JsonStreamBuilder" Formatter class = "org.apache.synapse.commons.json.JsonStreamFormatter"

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