Escape encoding such as URL parameter +,&,=,/

　　URLs appear with A +, space,/,?,%,#,&,= and other special symbols, may not be able to get the correct parameter value on the server side.

Case:

<src= "barcode39.aspx?barcodevalue=http://www.baidu.com.cn:8066/order/ Inputtraininginfo_kcsj.aspx? trainid=1&trainmoney=900&t=2&w=500&h=500 "  ID=" imgewm "/>

What if we want the Barcodevalue parameter to be http://www.baidu.com.cn:8066/order/InputTrainingInfo_kcsj.aspx? Trainid=1&trainmoney=900,&t=2,&w=500,&h=500 we need to escape the equals sign, otherwise the server side will default to barcodevalue=http:// Www.baidu.com.cn:8066/order/InputTrainingInfo_kcsj.aspx?,TrainId=1,TrainMoney=900,&t=2,&w=500,&h= 500.

Special symbol escape codes are as follows:

Symbol	URL brokered results	Escape codes
+	The + sign in the URL denotes a space	%2b
Space	Spaces in the URL can be used with a + or code	%20
/	Separating directories and subdirectories	%2f
？	Separating the actual URLs and parameters	%3f
%	Specify special characters	%25
#	Represents a bookmark	%23
&	Delimiter between the parameters specified in the URL	%26
=	The value of the specified parameter in the URL	%3d

After escaping the code:

<src= "barcode39.aspx?barcodevalue=http://www.baidu.com.cn:8066/order/ Inputtraininginfo_kcsj.aspx? trainid%3d1%26trainmoney%3d900&t=2&w=500&h=500 "  ID=" imgewm "/>

Escape encoding such as URL parameter +,&,=,/