如果要包含动态数据，这里还有另一种方法。

#!/bin/bash

version=$1
text=$2
branch=$(git rev-parse --abbrev-ref HEAD)
repo_full_name=$(git config --get remote.origin.url | sed 's/.*:\/\/github.com\///;s/.git$//')
token=$(git config --global github.token)

generate_post_data()
{
  cat <<EOF
{
  "tag_name": "$version",
  "target_commitish": "$branch",
  "name": "$version",
  "body": "$text",
  "draft": false,
  "prerelease": false
}
EOF
}

echo "Create release $version for repo: $repo_full_name branch: $branch"
curl --data "$(generate_post_data)" "https://api.github.com/repos/$repo_full_name/releases?access_token=$token"

它对我有用，使用：

curl -H "Accept: application/json" -H "Content-type: application/json" -X POST -d '{"id":100}' http://localhost/api/postJsonReader.do

它很高兴地映射到Spring控制器：

@RequestMapping(value = "/postJsonReader", method = RequestMethod.POST)
public @ResponseBody String processPostJsonData(@RequestBody IdOnly idOnly) throws Exception {
        logger.debug("JsonReaderController hit! Reading JSON data!"+idOnly.getId());
        return "JSON Received";
}

IdOnly是一个具有id属性的简单POJO。

尝试将数据放在一个文件中，比如body.json，然后使用

curl -H "Content-Type: application/json" --data @body.json http://localhost:8080/ui/webapp/conf

根据Anand Rockzz的回答，以下是我在GitHub Actions上对此所做的操作。由于EOF标签，这有点棘手。

我的目标是在Vercel部署完成后发送HTTP调用（类似于webhook）。

这个真实世界的例子可能会帮助其他人。

send-webhook-callback-once-deployment-ready:
  name: Invoke webhook callback url defined by the customer (Ubuntu 18.04)
  runs-on: ubuntu-18.04
  needs: await-for-vercel-deployment
  steps:
    - uses: actions/checkout@v1 # Get last commit pushed - See https://github.com/actions/checkout
    - name: Expose GitHub slug/short variables # See https://github.com/rlespinasse/github-slug-action#exposed-github-environment-variables
      uses: rlespinasse/github-slug-action@v3.x # See https://github.com/rlespinasse/github-slug-action
    - name: Expose git environment variables and call webhook (if provided)
      # Workflow overview:
      #  - Resolves webhook url from customer config file
      #  - If a webhook url was defined, send a
      run: |
        MANUAL_TRIGGER_CUSTOMER="${{ github.event.inputs.customer}}"
        CUSTOMER_REF_TO_DEPLOY="${MANUAL_TRIGGER_CUSTOMER:-$(cat vercel.json | jq --raw-output '.build.env.NEXT_PUBLIC_CUSTOMER_REF')}"

        VERCEL_DEPLOYMENT_COMPLETED_WEBHOOK=$(cat vercel.$CUSTOMER_REF_TO_DEPLOY.staging.json | jq --raw-output '.build.env.VERCEL_DEPLOYMENT_COMPLETED_WEBHOOK')

        # Checking if a webhook url is defined
        if [ -n "$VERCEL_DEPLOYMENT_COMPLETED_WEBHOOK" ]; then
          # Run script that populates git-related variables as ENV variables
          echo "Running script populate-git-env.sh"
          . ./scripts/populate-git-env.sh

          echo "Resolved git variables:"
          echo "'GIT_COMMIT_SHA': $GIT_COMMIT_SHA"
          echo "'GIT_COMMIT_REF': $GIT_COMMIT_REF"
          echo "'GIT_COMMIT_TAGS': $GIT_COMMIT_TAGS"

          # Generates JSON using a bash function - See https://stackoverflow.com/a/57369772/2391795
          # "End Of File" must be at the beginning of the line with no space/tab before or after - See https://stackoverflow.com/a/12909284/2391795
          # But, when executed by GitHub Action, it must be inside the "run" section instead
          generate_post_data() {
            cat <<EOF
          {
            "MANUAL_TRIGGER_CUSTOMER": "${MANUAL_TRIGGER_CUSTOMER}",
            "CUSTOMER_REF": "${CUSTOMER_REF_TO_DEPLOY}",
            "STAGE": "staging",
            "GIT_COMMIT_SHA": "${GIT_COMMIT_SHA}",
            "GIT_COMMIT_REF": "${GIT_COMMIT_REF}",
            "GIT_COMMIT_TAGS": "${GIT_COMMIT_TAGS}",
            "GITHUB_REF_SLUG": "${GITHUB_REF_SLUG}",
            "GITHUB_HEAD_REF_SLUG": "${GITHUB_HEAD_REF_SLUG}",
            "GITHUB_BASE_REF_SLUG": "${GITHUB_BASE_REF_SLUG}",
            "GITHUB_EVENT_REF_SLUG": "${GITHUB_EVENT_REF_SLUG}",
            "GITHUB_REPOSITORY_SLUG": "${GITHUB_REPOSITORY_SLUG}",
            "GITHUB_REF_SLUG_URL": "${GITHUB_REF_SLUG_URL}",
            "GITHUB_HEAD_REF_SLUG_URL": "${GITHUB_HEAD_REF_SLUG_URL}",
            "GITHUB_BASE_REF_SLUG_URL": "${GITHUB_BASE_REF_SLUG_URL}",
            "GITHUB_EVENT_REF_SLUG_URL": "${GITHUB_EVENT_REF_SLUG_URL}",
            "GITHUB_REPOSITORY_SLUG_URL": "${GITHUB_REPOSITORY_SLUG_URL}",
            "GITHUB_SHA_SHORT": "${GITHUB_SHA_SHORT}"
          }
        EOF
          }

          echo "Print generate_post_data():"
          echo "$(generate_post_data)"

          echo "Calling webhook at '$VERCEL_DEPLOYMENT_COMPLETED_WEBHOOK'"
          echo "Sending HTTP request (curl):"
          curl POST \
            "$VERCEL_DEPLOYMENT_COMPLETED_WEBHOOK" \
            -vs \
            --header "Accept: application/json" \
            --header "Content-type: application/json" \
            --data "$(generate_post_data)" \
            2>&1 | sed '/^* /d; /bytes data]$/d; s/> //; s/< //'

          # XXX See https://stackoverflow.com/a/54225157/2391795
          # -vs - add headers (-v) but remove progress bar (-s)
          # 2>&1 - combine stdout and stderr into single stdout
          # sed - edit response produced by curl using the commands below
          #   /^* /d - remove lines starting with '* ' (technical info)
          #   /bytes data]$/d - remove lines ending with 'bytes data]' (technical info)
          #   s/> // - remove '> ' prefix
          #   s/< // - remove '< ' prefix

        else
          echo "No webhook url defined in 'vercel.$CUSTOMER_REF_TO_DEPLOY.staging.json:.build.env.VERCEL_DEPLOYMENT_COMPLETED_WEBHOOK' (found '$VERCEL_DEPLOYMENT_COMPLETED_WEBHOOK')"
        fi

以下代码适用于我。

我使用的是示例数据api

curl -X POST --data @json_out.txt https://sampledataapi.com/API/login

这里是解释

-X Means the HTTP verb.
--data Means the data you want to send.

对于Windows，对-d值使用单引号对我来说不起作用，但在更改为双引号后，它确实起了作用。我还需要在大括号内转义双引号。

也就是说，以下操作无效：

curl -i -X POST -H "Content-Type: application/json" -d '{"key":"val"}' http://localhost:8080/appname/path

但以下措施奏效了：

curl -i -X POST -H "Content-Type: application/json" -d "{\"key\":\"val\"}" http://localhost:8080/appname/path