How to sanitize and validate user input to pass a Checkmarx scan
[cahen (accepted answer)] HtmlUtils from spring-web got the job done with: HtmlUtils.htmlEscape(x) Maven dependency: ``` [dependency] [groupId]org.springframework[/groupId] [artifactId]spring-web[/artifactId] [version]5.1.7.RELEASE[/version] [/dependency] ```
Context: Stack Overflow #31984962 (accepted answer, 17 votes, 2 answers): I have an endpoint that receives a String from the client as seen below: ``` @GET @Path("/{x}") public Response doSomething(@PathParam("x") String x) { String y = myService.process(x); return Response.status(OK).entity(y).build(); } ``` Checkmarx complains that this element's value then "flows through the code without being properly sanitized or validated and is eventually displayed to the user in method doSomething" Then I tried this: ``` @GET @Path("/{x}") public Response doSomething(@PathParam("x") String x) { if (StringUtils.trimToNull(x) == null || x.length() > 100) {Maintainer review
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