首页 \ 问答 \ 当文件上传（多个）完成时，复选框将自动检查(when the file upload (multiple) complete, the checkbox will auto check)

当文件上传（多个）完成时，复选框将自动检查(when the file upload (multiple) complete, the checkbox will auto check)

 我正在做一个表单，在用户上传文件后，该复选框将自动检查，以便用户知道他们的文件已被上传。 
 

 在表单中，将有很少的“文件上传输入”和一个“多文件上传输入”，每个都有一个复选框旁边将在文件上传后自动检查。 
 

 这是我的文件上传代码 
 

<div><input type="checkbox" id="application" value="application" name="application"/><label for="application"><span></span></label>
</div>
<div>
    <div>Application Form</div>
    <div>
        <input id="filename1" type="text"/> 
        <div class="fileUpload btn btn-primary">
            <span>Add</span>
            <input id="uploadBtn1" type="file" class="upload" name="browsefile" file-accept="pdf, doc, docx, jpg, jpeg, png"/>
        </div>
    </div>                                                         
</div>

<div><input type="checkbox" id="application2" value="application2" name="application2"/><label for="application2"><span></span></label>
</div>
<div>
    <div>Application Form2</div>
    <div>
        <input id="filename2" type="text"/> 
        <div class="fileUpload btn btn-primary">
            <span>Add</span>
            <input id="uploadBtn2" type="file" class="upload" name="browsefile" file-accept="pdf, doc, docx, jpg, jpeg, png"/>
        </div>
    </div>                                                         
</div>

 

 脚本 
 

document.getElementById('uploadBtn1').onchange = uploadOnChange;

function uploadOnChange() {
    var filename = this.value;
    var lastIndex = filename.lastIndexOf("\\");
    if (lastIndex >= 0) {
        filename = filename.substring(lastIndex + 1);
    }
    document.getElementById('filename1').value = filename;
}

 

 这里是小提琴http://fiddle.jshell.net/kpxyb74h/ 
 

 这是多个文件的代码 
 

<div><input type="checkbox" id="payment" value="payment" name="payment" /><label for="payment"><span></span></label>
</div>
<div>
    <div>Payment</div>
    <div>
        <div id="upload_prev"></div>
        <div class="fileUpload btn btn-primary">
        <span>Add</span>
        <input id="uploadBtn" type="file" class="upload" multiple name="browsefile" file-accept="pdf, doc, docx, jpg, jpeg, png"/>
    </div>                                                         
</div>

 

 脚本 
 

$(document).on('click','.close',function(){
    $(this).parents('span').remove();

})

document.getElementById('uploadBtn').onchange = uploadOnChange;

function uploadOnChange() {
    var files = $('#uploadBtn')[0].files;
    for (var i = 0; i < files.length; i++) {
     $("#upload_prev").append('<span>'+'<div class="filenameupload">'+files[i].name+'</div>'+'<p class="close" >X</p></span>');
    }
    document.getElementById('filename').value = filename;
}

 

 这里是多个文件的小提琴http://fiddle.jshell.net/37zjr70k/ 
 

 我必须将脚本分开，因为它无法同时运行。 

I'm doing a form that after the user upload the file, the checkbox will auto check, so that the user will know that their file had been uploaded.
 

In the form, there will have few "file upload input" and one "multiple file upload input", each of it will have a checkbox beside that will automatically checked after the file had been uploaded.
 

here is my code for file upload
 

<div><input type="checkbox" id="application" value="application" name="application"/><label for="application"><span></span></label>
</div>
<div>
    <div>Application Form</div>
    <div>
        <input id="filename1" type="text"/> 
        <div class="fileUpload btn btn-primary">
            <span>Add</span>
            <input id="uploadBtn1" type="file" class="upload" name="browsefile" file-accept="pdf, doc, docx, jpg, jpeg, png"/>
        </div>
    </div>                                                         
</div>

<div><input type="checkbox" id="application2" value="application2" name="application2"/><label for="application2"><span></span></label>
</div>
<div>
    <div>Application Form2</div>
    <div>
        <input id="filename2" type="text"/> 
        <div class="fileUpload btn btn-primary">
            <span>Add</span>
            <input id="uploadBtn2" type="file" class="upload" name="browsefile" file-accept="pdf, doc, docx, jpg, jpeg, png"/>
        </div>
    </div>                                                         
</div>

 

Script
 

document.getElementById('uploadBtn1').onchange = uploadOnChange;

function uploadOnChange() {
    var filename = this.value;
    var lastIndex = filename.lastIndexOf("\\");
    if (lastIndex >= 0) {
        filename = filename.substring(lastIndex + 1);
    }
    document.getElementById('filename1').value = filename;
}

 

here is the fiddle http://fiddle.jshell.net/kpxyb74h/
 

here is the code for multiple file
 

<div><input type="checkbox" id="payment" value="payment" name="payment" /><label for="payment"><span></span></label>
</div>
<div>
    <div>Payment</div>
    <div>
        <div id="upload_prev"></div>
        <div class="fileUpload btn btn-primary">
        <span>Add</span>
        <input id="uploadBtn" type="file" class="upload" multiple name="browsefile" file-accept="pdf, doc, docx, jpg, jpeg, png"/>
    </div>                                                         
</div>

 

script
 

$(document).on('click','.close',function(){
    $(this).parents('span').remove();

})

document.getElementById('uploadBtn').onchange = uploadOnChange;

function uploadOnChange() {
    var files = $('#uploadBtn')[0].files;
    for (var i = 0; i < files.length; i++) {
     $("#upload_prev").append('<span>'+'<div class="filenameupload">'+files[i].name+'</div>'+'<p class="close" >X</p></span>');
    }
    document.getElementById('filename').value = filename;
}

 

here is the fiddle for multiple file http://fiddle.jshell.net/37zjr70k/
 

I have to separate the script because it unable to function at the same time.

原文：https://stackoverflow.com/questions/32087950
更新时间：2023-09-18 10:09

最满意答案

 根据我的经验，我意识到有两种通用方法可以防止azure存储表注入。 一个是用另一个字符串替换字符串'，如; ，“或URLEncode字符串'。这是您的选择。另一种是使用普通内容的编码格式（如Base64）的存储表密钥。 
 

 这是我的测试Java程序如下： 
 

import org.apache.commons.codec.binary.Base64;

import com.microsoft.azure.storage.CloudStorageAccount;
import com.microsoft.azure.storage.table.CloudTable;
import com.microsoft.azure.storage.table.CloudTableClient;
import com.microsoft.azure.storage.table.TableOperation;
import com.microsoft.azure.storage.table.TableQuery;
import com.microsoft.azure.storage.table.TableQuery.QueryComparisons;

public class TableInjectTest {

    private static final String storageConnectString = "DefaultEndpointsProtocol=http;" + "AccountName=<ACCOUNT_NAME>;"
            + "AccountKey=<ACCOUNT_KEY>";

    public static void reproduce(String query) {
        try {
            CloudStorageAccount storageAccount = CloudStorageAccount.parse(storageConnectString);
            CloudTableClient tableClient = storageAccount.createCloudTableClient();
            // Create table if not exist.
            String tableName = "people";
            CloudTable cloudTable = new CloudTable(tableName, tableClient);
            final String PARTITION_KEY = "PartitionKey";
            String partitionFilter = TableQuery.generateFilterCondition(PARTITION_KEY, QueryComparisons.EQUAL, query);
            System.out.println(partitionFilter);
            TableQuery<CustomerEntity> rangeQuery = TableQuery.from(CustomerEntity.class).where(partitionFilter);
            for (CustomerEntity entity : cloudTable.execute(rangeQuery)) {
                System.out.println(entity.getPartitionKey() + " " + entity.getRowKey() + "\t" + entity.getEmail() + "\t"
                        + entity.getPhoneNumber());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /*
     * The one way is replace ' with other symbol string
     */
    public static String preventByReplace(String query, String symbol) {
        return query.replaceAll("'", symbol);
    }

    public static void addEntityByBase64PartitionKey() {
        try {
            CloudStorageAccount storageAccount = CloudStorageAccount.parse(storageConnectString);
            CloudTableClient tableClient = storageAccount.createCloudTableClient();
            // Create table if not exist.
            String tableName = "people";
            CloudTable cloudTable = new CloudTable(tableName, tableClient);
            String partitionKey = Base64.encodeBase64String("Smith".getBytes());
            CustomerEntity customer = new CustomerEntity(partitionKey, "Will");
            customer.setEmail("will-smith@contoso.com");
            customer.setPhoneNumber("400800600");
            TableOperation insertCustomer = TableOperation.insertOrReplace(customer);
            cloudTable.execute(insertCustomer);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // The other way is store PartitionKey using encoding format such as Base64
    public static String preventByEncodeBase64(String query) {
        return Base64.encodeBase64String(query.getBytes());
    }

    public static void main(String[] args) {
        String queryNormal = "Smith";
        reproduce(queryNormal);
        /*
         * Output as follows:
         * PartitionKey eq 'Smith'
         * Smith Ben    Ben@contoso.com 425-555-0102
         * Smith Denise Denise@contoso.com  425-555-0103
         * Smith Jeff   Jeff@contoso.com    425-555-0105
         */
        String queryInjection = "Smith' or PartitionKey lt 'Z";
        reproduce(queryInjection);
        /*
         * Output as follows:
         * PartitionKey eq 'Smith' or PartitionKey lt 'Z'
         * Webber Peter Peter@contoso.com   425-555-0101             <= This is my information
         * Smith Ben    Ben@contoso.com 425-555-0102
         * Smith Denise Denise@contoso.com  425-555-0103
         * Smith Jeff   Jeff@contoso.com    425-555-0105
         */
        reproduce(preventByReplace(queryNormal, "\"")); // The result same as queryNormal
        reproduce(preventByReplace(queryInjection, "\"")); // None result, because the query string is """PartitionKey eq 'Smith" or PartitionKey lt "Z'"""
        reproduce(preventByReplace(queryNormal, "&")); // The result same as queryNormal
        reproduce(preventByReplace(queryInjection, "&")); // None result, because the query string is """PartitionKey eq 'Smith& or PartitionKey lt &Z'"""
        /*
         * The second prevent way
         */
        addEntityByBase64PartitionKey(); // Will Smith
        reproduce(preventByEncodeBase64(queryNormal));
        /*
         * Output as follows:
         * PartitionKey eq 'U21pdGg='
         * U21pdGg= Will    will-smith@contoso.com  400800600     <= The Base64 string can be decoded to "Smith"
         */
        reproduce(preventByEncodeBase64(queryInjection)); //None result
        /*
         * Output as follows:
         * PartitionKey eq 'U21pdGgnIG9yIFBhcnRpdGlvbktleSBsdCAnWg=='
         */
    }

}

 

 我认为最好的选择是根据应用程序选择一种合适的方法来防止查询注入。 
 

 如有任何疑虑，请随时告诉我。 

Per my experience, I realize that there is two general ways to prevent azure storage table injection. The one is replace the string ' with the other string such as ; , " or URLEncode string of '. This is your option. The other is storage table key using an encoding format(such as Base64) instread of plain content.
 

This is my test Java program as follows:
 

import org.apache.commons.codec.binary.Base64;

import com.microsoft.azure.storage.CloudStorageAccount;
import com.microsoft.azure.storage.table.CloudTable;
import com.microsoft.azure.storage.table.CloudTableClient;
import com.microsoft.azure.storage.table.TableOperation;
import com.microsoft.azure.storage.table.TableQuery;
import com.microsoft.azure.storage.table.TableQuery.QueryComparisons;

public class TableInjectTest {

    private static final String storageConnectString = "DefaultEndpointsProtocol=http;" + "AccountName=<ACCOUNT_NAME>;"
            + "AccountKey=<ACCOUNT_KEY>";

    public static void reproduce(String query) {
        try {
            CloudStorageAccount storageAccount = CloudStorageAccount.parse(storageConnectString);
            CloudTableClient tableClient = storageAccount.createCloudTableClient();
            // Create table if not exist.
            String tableName = "people";
            CloudTable cloudTable = new CloudTable(tableName, tableClient);
            final String PARTITION_KEY = "PartitionKey";
            String partitionFilter = TableQuery.generateFilterCondition(PARTITION_KEY, QueryComparisons.EQUAL, query);
            System.out.println(partitionFilter);
            TableQuery<CustomerEntity> rangeQuery = TableQuery.from(CustomerEntity.class).where(partitionFilter);
            for (CustomerEntity entity : cloudTable.execute(rangeQuery)) {
                System.out.println(entity.getPartitionKey() + " " + entity.getRowKey() + "\t" + entity.getEmail() + "\t"
                        + entity.getPhoneNumber());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /*
     * The one way is replace ' with other symbol string
     */
    public static String preventByReplace(String query, String symbol) {
        return query.replaceAll("'", symbol);
    }

    public static void addEntityByBase64PartitionKey() {
        try {
            CloudStorageAccount storageAccount = CloudStorageAccount.parse(storageConnectString);
            CloudTableClient tableClient = storageAccount.createCloudTableClient();
            // Create table if not exist.
            String tableName = "people";
            CloudTable cloudTable = new CloudTable(tableName, tableClient);
            String partitionKey = Base64.encodeBase64String("Smith".getBytes());
            CustomerEntity customer = new CustomerEntity(partitionKey, "Will");
            customer.setEmail("will-smith@contoso.com");
            customer.setPhoneNumber("400800600");
            TableOperation insertCustomer = TableOperation.insertOrReplace(customer);
            cloudTable.execute(insertCustomer);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // The other way is store PartitionKey using encoding format such as Base64
    public static String preventByEncodeBase64(String query) {
        return Base64.encodeBase64String(query.getBytes());
    }

    public static void main(String[] args) {
        String queryNormal = "Smith";
        reproduce(queryNormal);
        /*
         * Output as follows:
         * PartitionKey eq 'Smith'
         * Smith Ben    Ben@contoso.com 425-555-0102
         * Smith Denise Denise@contoso.com  425-555-0103
         * Smith Jeff   Jeff@contoso.com    425-555-0105
         */
        String queryInjection = "Smith' or PartitionKey lt 'Z";
        reproduce(queryInjection);
        /*
         * Output as follows:
         * PartitionKey eq 'Smith' or PartitionKey lt 'Z'
         * Webber Peter Peter@contoso.com   425-555-0101             <= This is my information
         * Smith Ben    Ben@contoso.com 425-555-0102
         * Smith Denise Denise@contoso.com  425-555-0103
         * Smith Jeff   Jeff@contoso.com    425-555-0105
         */
        reproduce(preventByReplace(queryNormal, "\"")); // The result same as queryNormal
        reproduce(preventByReplace(queryInjection, "\"")); // None result, because the query string is """PartitionKey eq 'Smith" or PartitionKey lt "Z'"""
        reproduce(preventByReplace(queryNormal, "&")); // The result same as queryNormal
        reproduce(preventByReplace(queryInjection, "&")); // None result, because the query string is """PartitionKey eq 'Smith& or PartitionKey lt &Z'"""
        /*
         * The second prevent way
         */
        addEntityByBase64PartitionKey(); // Will Smith
        reproduce(preventByEncodeBase64(queryNormal));
        /*
         * Output as follows:
         * PartitionKey eq 'U21pdGg='
         * U21pdGg= Will    will-smith@contoso.com  400800600     <= The Base64 string can be decoded to "Smith"
         */
        reproduce(preventByEncodeBase64(queryInjection)); //None result
        /*
         * Output as follows:
         * PartitionKey eq 'U21pdGgnIG9yIFBhcnRpdGlvbktleSBsdCAnWg=='
         */
    }

}

 

I think that the best option is choose a suitable way to prevent query injection on the basis of application sence.
 

Any concerns, please feel free to let me know.

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