0

我有一个域类

class UploadSyllabus {
    String semester
    Course course
    Department department
    byte[] uploadSyllabus
}

其中 Course、Department 是其他域类

在我的Show.gsp页面

<a style="margin-left: 108px;"href="javascript:getPdfFromDB()" id="downloadPdf">Download_Syllabus.pdf</a>


function getPdfFromDB(){
    var formdata = $("#downloadSyllabusForm").serialize();
    $.get("${grailsApplication.config.grails.serverURL}/uploadSyllabus/getPdfFromDBC", formdata, function(response) {
        for (var i = 0; i < response.length; i++) {
            document.getElementById("subjectResult").innerHTML=response
            document.getElementById("courseResult").innerHTML=$("#course option:selected").text();
            document.getElementById("semesterResult").innerHTML=$("#semester option:selected").text();
        }
    });
}

我的控制器的操作:

def getPdfFromDBC = {
    def sem = params.semester
    def course = params.course
    def department = params.department
    List s= UploadSyllabus.executeQuery("select id from UploadSyllabus where department_id = "+params.department +"AND course_id = "+params.course + "AND semester = "+sem)
    def product = UploadSyllabus.get(s[0])
    println "product is ---"+product
    response.contentType = 'application/pdf'
    response.setHeader('Content-disposition', 'Attachment; filename=uploadSyllabus.pdf')
    response.getOutputStream().write(product.uploadSyllabus)
    response.getOutputStream().flush()
    // render s.name as SHALLOW
}

我需要做的是,我的视图页面中有三个下拉列表,当我选择其中的 3 个并单击下载链接时,需要下载已上传到数据库中的特定 pdf。

当我运行我的代码时,我没有收到任何错误,而是收到“页面变得无响应。请终止或等待浏览器。”

4

1 回答 1

0

您不能在 document.getElementById("subjectResult").innerHTML=response 中插入 pdf

如果您想在 html 中呈现 pdf,请使用 pdf.js

https://github.com/mozilla/pdf.js

于 2012-08-06T13:31:31.400 回答